what is the independent variable for the tadpole diet experiment?

This type of hypothesis is constructed to state the independent variable followed by the predicted impact on the dependent variable. Instead, to test the hypothesis that natural bleaching events were caused by increases in water temperature, a team of researchers wrote a computer program to predict bleaching events based on real-time water temperature data. They probably do not eat tadpoles in large quantities, although they might eat frog eggs and an occasional tadpole. According to the convention, in the example where the hypothesis is: " The braking distance grows linearly with the speed", what usually will be graphed on the y axis? Explanation: In this experiment, it is observed that how the change in the type of diet if meat diet is internalized how the average weight of tadpoles increase comparatively than other types of diet. Imagine that you wish to compare two different diets that will be fed to tadpoles raised in a lab. That would control for the expected hardness. She has taught English and biology in several countries. In an experiment, the researcher is looking for the possible effect on the dependent variable that might be caused by changing the independent . She has taught science courses at the high school, college, and graduate levels. what is the independent variable for the tadpole diet experiment? The dependent variable is the effect. You want to see if the meat-based diet will be associated with an increase in the average weight of the tadpoles. The dependent variable goes on the y-axis, or vertical axis. (2008) showed that women who experience mother-in-law as a caregiver had twice the odd of PPD. For this type of study, the only choice is an instrument that queries past diet. To negate the effects of variables that youre unaware of (lets say patients sleep patterns in a clinical trial), you randomly assign subjects to the control group or treatment group. Can you identify the independent and dependent variables for each of the four scenarios below? B. Tadpole size will be unpredictable if fed a meat-based diet. How do you graph an independent variable? But there are also lots of independent variables factors you suspect have an impact on your dependent variable. Independent Variable The variable that is stable and unaffected by the other variables you are trying to measure. One diet is a meatbased fish food, and the other is the traditional diet of boiled lettuce. The following table shows the results of measuring the percentages of four bases in the DNA of several different organisms. If you didn't have any constant variables, you wouldn't be able to tell if the independent variable was what was really affecting the dependent variable. The value of the dependent variable is measured. Remember, the independent variable is the one the experimenter controls to measures its effect on the dependent variable. This website uses cookies to improve your experience while you navigate through the website. As an Authorised Service Partner we provide IT services based on Hitachi Vantara technology that support business operations for maximum performance, scalability, and reliability. The average weight for groups of bullfrog tadpoles is higher if density of tadpoles per gallon of water is less than 1. Independent variables are the variables that the experimenter changes to test their dependent variable. The point is that a researcher knows the values of the independent variable. The only difference between your control and experimental groups is the type of food the tadpoles receive. Independent and Dependent Variables - Organizing Your Social Sciences Which statement regarding the scientific method is false? . 1 For example, in a study looking at how tutoring impacts test scores, the dependent variable would be the participants' test scores since that is what is being measured. The independent variable is the amount of water given. Because other researchers must be able to repeat the experiment in order to check the results. However, after several weeks, I have no sprouts. Retrieved from https://www.thoughtco.com/definition-of-independent-variable-605238. What is the independent variable for the tadpole diet experiment? In your experiment you keep all other factors, such as tadpole density, temperature, pH, and the amount of food, constant. Let's see how this simple example illustrates the parts of a controlled experiment. Direct link to Brian F's post How do the sprouting seed, Posted 4 years ago. The two main variables in a science experiment are the independent variable and the dependent variable. All kinds of businesses can conduct these experiments, and they necessarily dont need to be costly or time consuming they just need to be controlled and include an element of randomization., Lets start with the word experiment. Anywhere depending upon the problem being examined. Scientific Method Lab Ho.. Help Save & Exit Submit 19 Pillbug number 0.02 points In the pillbug experiment, how many pillbugs did you need to use to get good information for the experiment? This is an example of kinesis Dependent and Independent Variables. a. The independent variable (sometimes known as the manipulated variable) is the variable whose change isn't affected by any other variable in the experiment. Remember, the independent variable is what you control/change, and the dependent variable is what changes because of that. Can you lift more with a fixed or movable pulley? Independent Variable in Psychology: Examples and Importance - Verywell Mind 4. Math Glossary: Mathematics Terms and Definitions, The Difference Between Control Group and Experimental Group, independent variable and the dependent variable, Ph.D., Biomedical Sciences, University of Tennessee at Knoxville, B.A., Physics and Mathematics, Hastings College. What is the independent variable for the tadpole diet experiment? With your pairs of wells above, youd randomly pick, maybe even by tossing a coin, which gets the new drill in each pair. Direct link to Asithandile Ntsondwa's post in the results obtained h, Posted 3 years ago. One of the more structured experiments is the randomized controlled experiment. Making sure that you come up with a hypothesis that makes a true statement is by far the most important aspect of the scientific method. The 'dependent' variable cannot change or grow unless something else is happening or influencing it. Its value depends on changes in the independent variable. Its value is independent of other variables in your study. What is the dependent variable for the tadpole diet experiment? If you're seeing this message, it means we're having trouble loading external resources on our website. Scientists test hypotheses by making predictions: if hypothesis, When possible, scientists test their hypotheses using controlled experiments. 10) What is the dependent variable for the tadpole diet experiment? You want to see if the meat-based diet will be associated with an increase in the average weight of the tadpoles. Direct link to tyersome's post Nope, you can have multip. One diet is a meat-based fish food, and the other is the traditional diet of boiled lettuce. Panel 2: One pot (experimental group) is watered. What is the independent variable for the tadpole diet experiment? There is a spectrum of experiments that managers can do from quick, informal ones, to pilot studies, to field experiments, and to lab research. Analysis - draw graphs, evaluate the hypothesis. Our vetted tutor database includes a range of experienced educators who can help you polish an essay for English or explain how derivatives work for Calculus. Direct link to Ivana - Science trainee's post Yes, but the hypothesis h, Posted 5 years ago. The dependent variable is the variable that is being measured or tested in an experiment. Similarly, when testing a new drug, you need to account for the placebo effect, where people get better simply because they think theyre getting treated, so you treat your control group the exact same as the treatment group, and you look for improvement in the treatment group relative to the control group. Researchers often manipulate or measure independent and dependent variables in studies to test cause-and-effect relationships. This is different than the independent variable in an experiment, which is a variable . LS Retail products are used by retailers and restaurateurs in over 130 countries. Try growing some sunflowers and see how different factors affect their growth. You might also make sure that you use drilling equipment and crews to control for the impact those factors may have on the experiment. Independent variable: What the scientist changes or what changes on its own. ANSWER:- Tadpoles will be larger if fed a meat based diet. The independent variable is the cause. For example, in Experiment 2 above, some of the constant variables would be the type of plant being grown, the amount of fertilizer each plant is given, the amount of water each plant is given, when each plant is given fertilizer and water, the amount of sunlight the plants receive, the size of the container each plant is grown in, and more. Question 1 E) 10 In pillbug experiment 10 pillbugs are enough to have a good information about the experiment. An independent variable is defines as the variable that is changed or controlled in a scientific experiment. when the coral reefs are bleached does that mean they have died, if not do they stay white forever or return to their original form? Turning, Method 3 of 3: Graphing Independent and Dependent Variables. Biology questions and answers. These cookies track visitors across websites and collect information to provide customized ads. In a purely observational study the independent variables are those you believe are causative, and the indep. Calculate the value for the percentage of guanine bases in the bacterium. The scientist is changing the type of fertilizer each plant gets which in turn changes how much each plant grows, but every other part of the experiment stays the same. 2. Van Halen European Tour 1993, In some cases, there is no good way to test a hypothesis using a controlled experiment (for practical or ethical reasons). Determine the magnitude of the charges. The only difference between your control and experimental groups is the type of food the tadpoles receive . The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. In our oil well example, its the speed or efficiency with which you drill the well. For example, when investigating the effect of study time of performance, the study time is the independent variable. Similarly, in a clinical trial, there are a lot of other factors, such as patients age, general health, exercise regimens, and blood pressure, that can make it hard to see whether the results of the experiment can really be attributed to the drug as opposed to some other factor. These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc. 10 bean seeds are added to each pot. Number of bacteria c. generation Reproduction rate d. You want to determine if the new diet will increase the average weight of the tadpoles. The cookie is used to store the user consent for the cookies in the category "Performance". So, I hypothesize that they didn't sprout due to lack of water. 2. It's even possible for the dependent variable to remain unchanged in response to controlling the independent variable. The independent variable is the glass, and the dependent variable is the plexiglass. However, the replication level of your experiments will have an impact on the statistical tests you can perform on your dataset (parametric or non-parametric tests, which do not have the same power). It does not store any personal data. We specialize in professional IT services /Data Center, Collaboration, Cloud and Virtualisation solutions/ and business software solutions based on Microsoft Dynamics NAV and CRM product family, BI and LS Retail. There are no official rules about how many times experiments should be repeated to be reliable. It is the presumed effect. Do goldfish eat their babies? Woodfrog tadpoles grow larger if fed a meat-based diet. 1: Independent: dog food brands; Dependent: how much you dog eats, 2: Independent: how long you spend at the party; Dependent: your exam score, 3: Independent: Amount of time you spend waiting; Dependent: Total time you're at the dentist (the 30 minutes of appointment time is the constant), 4: Independent: Number of times your cousin is asked to eat vegetables; Dependent: number of tantrums. Here control means the current way of doing things (e.g., the old bit) and treatment means the new way of doing things (e.g., the new bit). Where can you perform the experiment phase of the scientiific method? An example of a dependent variable is how tall you are at different ages. The independent variable is the amount of light and the moth's reaction is the, Dependent variable that Responds to change goes on the Y axis, Manipulated or Independent variable goes on the X axis. The difficulty is that the value of both of these variables can change. Tadpoles will be larger if fed a meat-based diet. Experiment 2: You want to see which type of fertilizer helps plants grow fastest, so you add a different brand of fertilizer to each plant and see how tall they grow. Form a hypothesis from given info II Imagine that you wish to compare two different diets that will be fed to tadpoles raised in a lab. After youve analyzed the results (and likely tested whether they are statistically significant) you put the results into practice. carry out the strategy and collect measurements. A short example :::: Background I will narrow my topic to caregiver's rules and their relationship in developing PPD. If an experiment were comparing five types of diets, then the independent variable (type of diet) would . One diet is a meat-based fish food, and the other is the traditional diet of boiled lettuce. That change is measured and recorded by the experimenter. Direct link to 47charbrow's post how come a prediction is , Posted 3 years ago. What is the independent variable? Conduct the experiment, following the protocol as closely as you can. Maybe the One diet is meat-based fish food, and the other is traditional diet of boiled lettuce.You want to see if the meat-based diet will be associated with an increase in the average weight of the tadpoles. When formulating a hypothesis, it is important to determine the scope, then pick four or five factors to focus on. Two examples of common independent variables are age and time. The independent and dependent variables are the two key variables in a science experiment. Some types of hypotheses can't be tested in controlled experiments for ethical or practical reasons. testable. The independent variable here would be the amount of water you give the plants, and the dependent variable is how tall the sunflowers grow. Thus, eating carrots is the independent variable. Lets say youre in the business of drilling oil wells, and you have a new drill bit that is operated by an artificial intelligence program that adjusts the pressure and speed with which youre turning the bit. Which is a good hypothesis for this tadpole experiment? In your experiment you keep all other factors , such as tadpole density per pan , temperature , pH , and the amount of food the same . Corals normally have tiny photosynthetic organisms living inside of them, and bleaching happens when they leave the coral, typically due to environmental stress. In the _________ phase, you will carry out the strategy you developed for testing the hypothesis. Direct link to Yvonne's post In the case of environmen, Posted 5 years ago. start text, C, O, end text, start subscript, 2, end subscript, start superscript, 3, comma, 4, end superscript. An independent variable is defines as the variable that is changed or controlled in a scientific experiment. When graphing these variables, the independent variable should go on the x-axis (the horizontal axis), and the dependent variable goes on the y-axis (vertical axis). Variables - Working scientifically - KS3 Science - BBC Bitesize Direct link to kelly smith's post why not test different ac, Posted 4 years ago. if you planted different types of seeds in each of the pots, trying to determine if soil type affected germination, you might find some types of seeds germinate faster than others. create a strategy and formulate a hypothesis. Accelerate your career with Harvard ManageMentor. Both contain ten bean seeds planted in the same type of soil, and both are placed in the same window. The only difference between your control and experimental groups is the type of food the tadpoles receive. This makes it easy for you to quickly see which variable is independent and which is dependent when looking at a graph or chart. How big of a sample size do you need? Length of the experiment b. The Hypothesis is; "The braking distance grows linearly with speed" What is commonly graphed on the x axis of the graph? According to your lab, the variable that you manipulate during the experiment (the one that "varies"), is the _____________ variable. What is the independent variable? https://en.wikipedia.org/wiki/Survey_(human_research)#Reported_behavior_versus_actual_behavior, https://www.ncbi.nlm.nih.gov/books/NBK43321/. From the graph, it looks like studying up to six hours helped her raise her score, but as she studied more than that her score dropped slightly. When researchers are interested in whether past diet as an independent variable may affect a dependent variable such as health status, they conduct a [glossary term:] retrospective study (also known as a case-control study) . Ask yourself, What is it were trying to do with this experiment? If you're still having a hard time understanding the relationship between independent and dependent variable, it might help to see them in action. You want to decide if the new diet will be associated with an increase in the average weight of the tadpoles. wendy barrie cause of death / port melbourne sharks address / death and ace of wands as feelings. In that case, a scientist may test a hypothesis by making predictions about patterns that should be seen in nature if the hypothesis is correct. An example of a dependent variable is how tall you are at different ages. The independent variable (sometimes known as the manipulated variable) is the variable whose change isn't affected by any other variable in the experiment. Green frog tadpoles grow larger if kept in water above 18C. Here are three experiments you can try at home. Will goldfish eat daphnia? Explained by Sharing Culture Necessary cookies are absolutely essential for the website to function properly.