Statistics Quiz

Which of the following is not a measure of central tendency?

• Mean

• Median

• Mode

• Standard deviation

Which of the following is a non-parametric test used for experimental data with a sample size of 20 or less?

• Pearson correlation

• T-test

• Mann-Whitney U

• Confidence intervals

What is the purpose of inferential statistics?

• To describe the basic features of the data

• To draw conclusions consistent with evidence

• To distinguish between levels of measurement

• To calculate the mean, median, and mode

Which of the following are measures of central tendency?

• Mean

• Median

• Mode

• Range

When is it appropriate to use the mean to describe data?

• When the data is nominal

• When the data is interval or ratio and there are no outliers

• When the data has a lot of outliers

• When the data is ordinal

When should you use the median instead of other measures of central tendency?

• When the data is nominal

• When the data is continuous without gaps

• When the contains outliers

• When the data is perfectly symmetrical

What is the correct procedure for calculating the median?

• Arrange your data in any order and find the middle value

• Arrange your data in ascending order and select the top value

• Arrange your data in ascending or descending order and find the middle value

• Arrange your data in descending order and select the bottom value

What should you do if your data set has an even number of values when calculating the median?

• Take the value just below the middle

• Take the value just above the middle

• Take the mean of the two middle values

• Choose any of the two middle values

What is the data set called if there are two modes?

• Uni-modal

• Bi-modal

• Multi-modal

• Non-modal

How many participants recalled all 9 numbers correctly after singing for 10 seconds?

• 1

• 2

• 3

• 4