Research Methods Review

Add all the values together and divide by the number of values in the set.

• Mean

• Median

• Mode

• Range

The most frequently occurring value in a set

• Mean

• Median

• Mode

• Range

Best measure of central tendency for sets with significant outliers

• Mean

• Median

• Mode

• Range

Best measure of central tendency for sets of categorical data

• Mean

• Median

• Mode

• Range

Which should NOT have gaps between bars?

• histogram

• bar chart

• scattergraph

• line of best fit

Answer explanation

Mean and SD both include ALL values, so they are more sophisticated measures.

Best measure of central tendency for sets with a normal distribution (not skewed)

• Mean

• Median

• Mode

• Range

Subtract the smallest value from the largest value, then add one.

• Mean

• Median

• Mode

• Range

Which are calculated using ALL values in the data set? Check ALL that apply!

• Mean

• Range

• Median

• Standard Deviation

Answer explanation

Mean and SD both include ALL values, so they are more sophisticated measures.

Which should be used for frequency distributions with continuous data?

• histogram

• bar chart

• scattergraph

• line of best fit

Which should be used for discrete or categorical data?

• histogram

• bar chart

• scattergraph

• line of best fit