Descriptive statistics

Question 1

Inferential statistics

Answer 1

Statistics that help us to draw conclusions about POPULATIONS

Question 2

Descriptive statistics

Answer 2

Statistics that summarize a set of DATA

Question 3

Mode

Answer 3

Most common

Question 4

Median

Answer 4

Middle number

middle score = (number of scores + 1) / 2

Question 5

Mean

Answer 5

mean = sum of scores/number of scores

Question 6

Range

Answer 6

difference between the highest and lowest scores in a distribution

Question 7

Inter-quartile

Answer 7

measure of variability de- fined as the difference be- tween the 75th percentile and the 25th percentile; it is a difference in scores, not percentages

Semi-interquartile is half of that