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.

Survey (Time 1) Survey (Time 2) 4 2 4 3 4 3 5 4 4 4 4 2 4 2 4 4 4 3 4 2 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.

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.