Statistics

Question 1

Range

Answer 1

• calculation of the dispersion in a set of scores

(highest - lowest)+1

Question 2

Standard Deviation

Answer 2

• sophisticated

- how much scores deviate from mean by calculating difference between mean and score

Question 3

Large SD

Answer 3

• lots of variation around mean
• scores spread widely
• different responses
• not all PPs were affected by the IV in the same way

Question 4

Small SD

Answer 4

• scores were closely clustered around mean

- PPs in sample were responding in very similar ways

Question 5

Distributions

Answer 5

Spread of frequency data

Question 6

Normal distribution

Answer 6

• bell shaped
• symmetrical
• mode, median, mean at middle
• tails of curve never touch x axis

Question 7

Positively skewed distribution

Answer 7

(highest) mode - median - mean (lowest)

most of distribution is concentrated on the left

Question 8

Negatively skewed distribution

Answer 8

(lowest) mean - median - mode (highest)

concentrated on the right