Wilcoxon signed rank test

If the p-value is less than or equal to your alpha, the null hypothesis is ____________.

• accepted

• not accepted

• rejected

• not to be rejected

This test is more powerful than the sign test because the sizes of the differences are totally ignored.

• True

• False

The Wilcoxon signed-rank test is used to detect what?

• Association

• Normality

• Difference

• None of the above

A researcher measured the same group of peoples' reactions while watching horror films and compared them to when watching romance films. The resulting data were skewed. What test should be used to analyse the data?

• Independent t-test

• Chi square test

• Wilcoxon signed-rank test

Wilcoxon sign rank test is a ____________ test.

• Parametric

• Non parametric

Wilcoxon sign rank test is used to compare two unmatched groups of data.

• True

• False

In Wilcoxon sign rank test, are the observations with no difference removed from ranking?

• Yes

• No

In Wilcoxon sign rank test, test statistic 'T' is the

• Difference of number of positive and negative signs

• Difference of total of positive and negative ranks

• Total of positive and negative ranks