Ch. 3 stats

the statistical measure to determine a single score that defines the center of a distribution

the sum of scores divided by the number of scores

• - changing a score
• - introducing a new score or removing a score
• - adding or subtracting a constant from each score
• - multiplying or dividing each score by a constant

the midpoint of the scores listed from lowest to highest

the score with the greatest frequesncy

• - extreme scores or skewed distributions
• -undetermined values
• - open-ended distributions
• - ordinal scale

• - nominal scales
• - discrete variables
• - describing shape