Biology > QUESTIONS & ANSWERS > Roosevelt Universit BIOLOGY 101 AP+Bio+Lab+Chi-Squared+Test+Worksheet-WL (1). (All)
Roosevelt Universit BIOLOGY 101 AP+Bio+Lab+Chi-Squared+Test+Worksheet-WL (1).
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AP Biology Lab – Chi-squared Test Video Review Sheet www.bozemanscience.com/chi-squared-test 1. Chi-squared Test: a. Why do you use the Chi-Square Test? We use it to see if the results are due ... to chance or was there a variable b. Define the Null Hypothesis: The null hypothesis is that there is no difference between the observed and expected results. c. What is the whole point of the Chi-Square test? To accept or reject the null hypothesis d. How do you calculate the “Degrees of Freedom”? You subtract one by the amount of categories you have in your experiment. e. What is the limit of the critical value? .05 value f. How much data do you need to get to apply the Chi-Square test? 30 g. Do Expected values need to be whole numbers? No they don't need to be h. What is your Chi-Square answer __0.72___So? Do you accept or reject the null hypothesis for the pill bug data? Why? You accept the null hypothesis because you got a value lower than 3.841. [Show More]
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