Qld Psychology Data Types IA1 Revision

Match the following

• The average of a set of numbers

• Mean

• A measure of the amount of variation or dispersion of a set of values

• Mode

• The difference between the highest and lowest numbers in a set

• Median

• The middle number in a sorted list of numbers

• Standard Deviation

• The number that appears most frequently in a set of numbers

• Range

Match the following

• Categories with a clear order or rank

• Nominal

• Equal intervals and zero means zero

• Ratio

• Categories with no inherent order

• Interval

• Equal intervals between categories

• Ordinal

The median of the numbers 34, 32, 12, 65, and 45 is...

• 34

• 32

• 12

• 65

What is the first step when looking at data?

• Find the mean

• Put them in order from least to greatest

• Sort the data into categories

• Find the range

Find the mean of 11, 12, 23, 14, and 15

• 14

• 15

• 16

• 23

Which is the appropriate measure of central tendency?

Justification: Nominal Data

• Mean

• Median

• Mode

Which is the appropriate measure of central tendency?

Justification: Ordinal Data

• Mean

• Median

• Mode

Which is the appropriate measure of central tendency?

Justification: Interval Data (no outliers)

• Mean

• Median

• Mode

Which is the appropriate measure of central tendency?

Justification: Ratio Data (no outliers)

• Mean

• Median

• Mode

Which is the appropriate measure of central tendency?

Justification: Outliers Present

• Mean

• Median

• Mode