Descriptive Statistics for Psychology

Which of these is a measure of dispersal?

• Mean
• Median
• Mode
• Range

Which of these is a measure of dispersal?

• Mean
• Median
• Mode
• Standard deviation

Which of these is an advantage of calculating the mean?

• It uses all of the data
• It can be used on nominal data
• It can be used on ordinal data

Which of these is an advantage of calculating the median?

• It uses all of the data
• It can be used on nominal data
• It can be used on ordinal data

Which of these is an advantage of calculating the mode?

• It uses all of the data
• It can be used on nominal data
• It can be used on ordinal data

In which graph is the different between the red and blue populations most significant?

• Left
• Right

In which graph is the different between the red and blue populations most significant?

• Left
• Right

What measure of dispersal would this formula calculate?
X_max - X_min =

• Range
• Standard deviation

What measure of dispersal would this formula calculate?

• Range
• Standard deviation

Which of these is a problem with the standard deviation?

• It is easy to calculate
• It is difficult to calculate
• It is skewed by extreme values
• It is not skewed by extreme values