Biology: The Unity and Diversity of Life (MindTap Course List)
14th Edition
ISBN: 9781305073951
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Textbook Question
Chapter 1, Problem 12SQ
A control group is _______.
- a. a set of individuals that have a certain characteristic or receive a certain treatment
- b. the standard against which an experimental group is compared
- c. the experiment that gives conclusive results
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A control group is_______ . a. a set of individuals that have a certain characteristic or receive a certain treatment b. the standard against which an experimental group is compared c. the experiment that gives conclusive results
A controlled experiment ________.
A.
includes one group for which the scientist controls all variables
B.
is repeated many times to ensure that the results are accurate
C.
includes at least two groups, one of which does not receive the experimental treatment
D.
includes at least two groups, one differing from the other by two or more variables
The 'control group' is an essential component of an experiment. This is because
1. A control group allows one to determine if a particular result is due to the experimental variable.
2. No, it's not essential in experimentation. A control group is not always necessary it depends on the experiment.
3. A control group allows for multiple variables to be tested at the same time.
4. A control group is required for the development of a prediction.
Chapter 1 Solutions
Biology: The Unity and Diversity of Life (MindTap Course List)
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- The purpose of the constant is to: a. allow for adjustment of the control b. eliminate other potential factors/variables in the experiment c. allow for the dependent variable to show the necessary outcome d. help prove the hypothesis correctarrow_forwardA control group is ______. a. a set of individuals that have a characteristic under study or receive an experimental treatment b. the standard against which an experimental group is compared c. the experiment that gives conclusive resultsarrow_forwardI need typing answerarrow_forward
- Moving to another question will save this response. Question 6 The control group in an experiment: a. is an additional replicate for statistical purposes b. makes the experiment valid c. minimizes experimental inaccuracy d. reduces the experimental errors e. allows a standard of comparison for the experimental group A Moving to another question will save this response. SONYarrow_forwardWhy the results of the Swan-neck flask experiment were reliable ?: Select one: a. Because it maintained no controls at all b. Because proper controls were maintained and only one variable changed at a time c. Because many controls were maintained d. Because it was repeatedly done by several scientists e. Because it tested all variables at the same timearrow_forwardA valid hypothesis… (Mark any that apply.) A. should be posed as a question. B. always leads to groundbreaking results. C. can be checked by experimentation. D. is falsifiable. E. is used to decide between a small number of alternatives. choose all that applyarrow_forward
- Which of the following is used when testing a prediction?a. observationsb. inductive reasoningc. controlled experimentsd. both observations and controlled experimentsarrow_forwardIf I set up a Chi square analysis and determine that I cannot reject the null hypothesis based on my data, but the null hypothesis should be rejected, what kind of error is that? a. Type II error b. Type I error c. Conservative errorarrow_forwardWhich of the following is not mentioned by Marder (2011) as a category of experimental research? A. Developing a mathematical model of a biology process B. Measuring a value C. Measuring a relationship between variables D. Using computers for analysis E. Improving and industrial productarrow_forward
- In an experiment, the control group is used to: a Change the variable b Provide a baseline for comparison with the test group c add additional non-dependent variables d demonstrate correlation rather than causation e generate hypothesesarrow_forwardThe following are reasons why randomized control trials (RCTs) are not used to investigate all research questions, except: a. RCTs can be expensive, which can make it difficult if funding is limited b. RCTs can be time-consuming, and it may take months and sometimes years to obtain final results c. For certain research questions and/or certain types of exposure variables, it may not be ethical to conduct an RCT d. RCTs are less valid than observational analytical study designsarrow_forwardIs the mean concentration of samples stored at one temperature statistically different from the mean concentration of samples stored at a different temperature?What type of data do you have? (highlight your chosen answer) i. One categorical ii. Two categorical iii. One numeric iv. One numeric and one categorical v. Two numeric b.What is your experimental hypothesis? c. What is your attentive hypothesis? d. What is your null hypothesis?arrow_forward
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