Question 1

Conducting analyses when statistical assumptions are violated can invalidate the results of the analysis.

Accepted Answer

A) True 
 B)False

Question 2

Data mining is your primary tool for analysing data.

Accepted Answer

A) True 
 B)False

Question 3

Wicked problems ______.

Accepted Answer

A)  are relatively infrequent 
B)  can be addressed with careful statistical analyses 
C)  are difficult to define and answer 
D)  all of these

Question 4

With one ordinal-level IV, you would most likely need to conduct a ______.

Accepted Answer

A)  one-sample t-test or z-test 
B)  one-way ANOVA 
C)  χ2 goodness-of-fit test 
D)  none of these

Question 5

If you want to know "How much does training affect customer satisfaction?", you are interested in statistical significance.

Accepted Answer

A) True 
 B)False

Question 6

In a dataset containing 2 DVs, if the upper 30% of values on the DV are missing from the sample, ______ will occur, which artificially ______ the size of correlations

Accepted Answer

A)  range enhancement, increases 
B)  range enhancement, decreases 
C)  range restriction, increases 
D)  range restriction, decreases

Question 7

The coefficient of determination is used as a measure of practical significance.

Accepted Answer

A) True 
 B)False

Question 8

A statistician's personal biases can lead to misinterpretation of results.

Accepted Answer

A) True 
 B)False

Question 9

$\begin{array}{|c|c|}
\hline \text { Survey (Time 1) } & \text { Survey (Time 2) } \
\hline 4 & 2 \
\hline 4 & 3 \
\hline 4 & 3 \
\hline 5 & 4 \
\hline 4 & 4 \
\hline 4 & 2 \
\hline 4 & 2 \
\hline 4 & 4 \
\hline 4 & 3 \
\hline 4 & 2 \
\hline
\end{array}$ Do job satisfaction survey scores change over time? Complete the full hypothesis testing process as described in Chapter 7 to examine this question and draw all appropriate conclusions.

Accepted Answer

The answer of \(\begin{array}{|c|c|}
\hline \text { Survey (Time 1) }...

Question 10

If you wanted to use a one-way ANOVA and your data were not normally distributed, you might use Spearman's rho.

Accepted Answer

A) True 
 B)False

Question 11

What is the difference between exploratory and confirmatory data analytic approaches?

Accepted Answer

The answer of What is the difference between exploratory and...

Question 12

Data should always be clean before analysis. How do you clean data?

Accepted Answer

The answer of Data should always be clean before analysis....

Question 13

If you wanted to examine the difference between morning shift and evening shift on a job satisfaction survey, you could use a χ2 goodness of fit.

Accepted Answer

A) True 
 B)False

Question 14

If you wanted to see if customer satisfaction survey scores were different between morning shoppers, mid-day shoppers, and night shoppers, you would most likely need to conduct a ______.

Accepted Answer

A)  paired-samples t-test 
B)  one-way ANOVA 
C)  χ2 goodness of fit test 
D)  regression analyses

Question 15

If you're interested in determining the strength of the relationship between sales (in pounds) and Likert-type survey scores, you would most likely need to conduct ______.

Accepted Answer

A)  one-way ANOVA 
B)  χ2 test of independence 
C)  correlation analyses 
D)  z-test or one-sample t-test

Question 16

Effect sizes can be ______.

Accepted Answer

A)  over-interpreted by ignoring practical significance 
B)  under-interpreted by committing the ecological fallacy 
C)  inappropriately ignored by relying on statistical significance 
D)  all of these

Question 17

Statistics alone provide the final answer to ______ meaningful questions.

Accepted Answer

A)  no 
B)  some 
C)  most 
D)  all

Exam 13: Matching Statistical Tests to Business Problems

Conducting analyses when statistical assumptions are violated can invalidate the results of the analysis.

Data mining is your primary tool for analysing data.

Wicked problems ______.

With one ordinal-level IV, you would most likely need to conduct a ______.

If you want to know "How much does training affect customer satisfaction?", you are interested in statistical significance.

In a dataset containing 2 DVs, if the upper 30% of values on the DV are missing from the sample, will occur, which artificially the size of correlations

The coefficient of determination is used as a measure of practical significance.

A statistician's personal biases can lead to misinterpretation of results.

If you wanted to use a one-way ANOVA and your data were not normally distributed, you might use Spearman's rho.

What is the difference between exploratory and confirmatory data analytic approaches?

Data should always be clean before analysis. How do you clean data?

If you wanted to examine the difference between morning shift and evening shift on a job satisfaction survey, you could use a χ² goodness of fit.

If you wanted to see if customer satisfaction survey scores were different between morning shoppers, mid-day shoppers, and night shoppers, you would most likely need to conduct a ______.

If you're interested in determining the strength of the relationship between sales (in pounds) and Likert-type survey scores, you would most likely need to conduct ______.

Effect sizes can be ______.

Statistics alone provide the final answer to ______ meaningful questions.