Exam 13: Matching Statistical Tests to Business Problems

Immediately after collecting data is the first point at which you should consider what data analytic approach you will take.

With an independent-sample t-test, we identify a significant difference between men and women on job satisfaction. This means that the difference between men and women is ______.

What questions should you ask about the variables available in your dataset to determine what statistical tests are appropriate?

If you want to conduct regression but your data contains dependences, ______ might be more appropriate.

A code sheet is used to explain the meaning of variables in a dataset.

Outcome variables are also called ______ variables.

If your data are not independent, you can always fix this by adding dependent values together.

If you're interested in investigating the interaction between two nominal variables, you would most likely need to conduct a ______.

The tests you've learned in this text book require ______ data.

Based upon the decision process given in this text, there are special requirements for ______.

Range enhancement results in artificially high correlations.

In a dataset containing 1 IV and 1 DV, if the middle 50% of values on the DV are missing from the sample, ______ will occur, which artificially ______ the size of correlations

To determine the difference between men and women on a ratio-level DV, you would most likely need to conduct a ______.

If you wanted to examine the relationship between two ratio variables, you could use correlation.

Over the past year, you've given employees the choice each month of whether to have a pizza party or a game night to celebrate high sales figures. If you wanted to see if employees picked one more often than the other, you would most likely need to conduct a ______.

An independent-samples t-test could also be conducted by converting the IV into 1's and 0's and conducting a regression analysis.

The eight-step hypothesis testing process used in this book is an example of an exploratory approach to data analysis.

To conduct any of the statistical tests covered in this text, each case must be ______.

Clean data should ______.

Days without a complaint this month 24 21 24 22 26 In the population, we'd expect Days Without a Complaint to have a mean of 24 and standard deviation of 1, but you want to know if your sample comes from a different population with a higher mean. Complete the full hypothesis testing process as described in Chapter 7 and draw all appropriate conclusions.