1. The correct statistical tests depends upon all of : 1260292.
1. The correct statistical tests depends upon all of the following EXCEPT:
A) the nature of the data
B) the number of variables
C) the size of the sample
D) the length of the survey
2. Misperceptions of the statistical significance include all of the following EXCEPT:
A) how much the mean of group A differs from the mean of group B
B) the validity of the data
C) the reliability of the data
D) probability that random (sampling) error is present
3. Which of the following does not influence validity of the collected data?
A) non-response bias
B) interviewer error
C) statistical significance
D) sample selection error
4. Type II error occurs when the null hypothesis in the population is _____ and the researcher ______ the null hypothesis.
A) true, accepts
B) true, rejects
C) false, accepts
D) false, accepts
5. Beta refers to:
A) type I error
B) type II error
C) population parameter
D) sample estimate
6. When it comes to error, which of the following is TRUE?
A) when beta increases, alpha increases
B) if alpha increases, the chance of type I error increases
C) to decrease the chance of retaining a false null hypothesis, alpha needs to be reduced
D) academic researchers typically use alphas greater than .05.
7. If the cost of a proposed course of action is minimal while the potential returns are large, then a researcher may:
A) select a smaller alpha
B) select a larger alpha
C) try to reduce the probability of Type I error
D) ignore both Type I and Type II error concerns
8. According to chi-square testings,
A) when the differences between the actual and expected frequencies is small, then there is not a good fit
B) each cell has a minimum expected count of 5
C) if more than half of the cells have actual counts less than 10 then results will not be reliable
D) if any cell has an expected value of 0, the results can still be reliable.
9. A researcher may “collapse” bordering ___ data values into a recoded variable containing fewer categories before running _____ analysis.
A) Nominal, Regression
B) Ordinal, Regression
C) Interval, Regression
D) Random, Regression
10. Common use of the chi-square test includes all of the following EXCEPT:
A) to see if a sample represents a particular target audience that is being studied through one way frequency analysis
B) to see if differences are present in responses across multiple categories.
C) to compare actual counts with expected counts
D) to see if one variable is positively correlated with another variable