Data Analysis: Descriptive Statistics

Question 1

Mean

Answer 1

add them all up and divide by the number

Question 2

median

Answer 2

the middle value

Question 3

mode

Answer 3

most frequently occurring

Question 4

mean evaluation

Answer 4

most sensitive and representative
easily distorted

Question 5

median evaluation

Answer 5

not affected by extreme values
less sensitive than the mean

Question 6

mode evaluation

Answer 6

easy to calculate
crude, unrepresentative

Question 7

range

Answer 7

subtract the lowest from the highest and add 1

Question 8

standard deviation

Answer 8

measures how much scores deviate from the mean

Question 9

range evaluation

Answer 9

easy to calculate
may be unrepresentative of the data set

Question 10

standard deviation evaluation

Answer 10

much more precise than the range
can be distorted by extreme values