Stat 160 Prequiz over Sections 9.1 and 9.2



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1. In a two sample location problem, which is not an estimate of shift

Difference in sample standard deviations.
Difference in sample medians.
Difference in sample means.
Median of differences between the two samples.
2. In a two sample location problem, which is not a robust estimate

The interquartile range of the first sample.
Difference in sample medians.
Median of differences between the two samples.
Difference in sample means.
3. The term shift in this section refers to

A type of dress.
Changing from low to second gear.
Difference in scale.
Difference in location.
4. In general, the estimate of the shift in locations based on the Wilcoxon is the

mean of the sample differences.
median of the sample differences.
ratio of the sample standard deviations.
ratio of the sample interquartile ranges.