stats 201 exam 3 utk questions with correct answers

stats 201 exam 3 utk questions with
correct answers

reject the null hypothesis - CORRECT ANSWER✔✔-when the p-value is
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less than the alpha
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fail(DO NOT) to reject the null - CORRECT ANSWER✔✔-when the p-
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value is larger than the alpha
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degrees of freedom: test of independence - CORRECT ANSWER✔✔-
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(#rows-1)(#columns-1)


degrees of freedom: one sample t-test - CORRECT ANSWER✔✔-n-1
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alpha level - CORRECT ANSWER✔✔-(1-confidence interval)
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3 Conditions for a Proportion - CORRECT ANSWER✔✔-1. Randomization
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2. 10% 3. Success/Failure
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, 4 Conditions for a Test of Independence - CORRECT ANSWER✔✔-1.
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Randomization 2. 10% 3. Count data 4. Expected Cell count greater than
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or equal to 5
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Box Plot - CORRECT ANSWER✔✔-histograms and stem-leaf plots are
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used to analyze a univariate quantitative variable
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Hypothesis test for a population mean - CORRECT ANSWER✔✔-must be
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quantitative variables, have a hypothesized value to test against
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Decision tree - CORRECT ANSWER✔✔-lots of variables, both
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quantitative & categorical variables | | |




Simple linear regression - CORRECT ANSWER✔✔-bivariate quantitative
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variables


Pearson's Correlation coefficient (r) - CORRECT ANSWER✔✔-used with
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2 qualitative variables to talk about the strength, direction, and form of
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the relationship
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Chi-square test of independence - CORRECT ANSWER✔✔-Two
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categorical variables. We have count data
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