2.3.1 and 2.3.2

Question 1

Mean

Answer 1

The art humerus average of a distribution, obtained by adding the scores then dividing by the number of scores

Question 2

Median

Answer 2

The middle score in a distribution; half the scores are above it and half are below it

Question 3

Mean can become…

Answer 3

Distorted by extreme numbers

Question 4

Averaged are derived from scores with…

Answer 4

Low variability are more reliable than averages with high variability

Question 5

Range

Answer 5

The difference between the highest and lowest scores Ina distribution

Question 6

Standard deviation

Answer 6

A computes measure of how much scores vary around the mean score

Question 7

Mode

Answer 7

The most frequently occurring score(s) in a distribution

Question 8

Normal curve

Answer 8

A symmetrical, bell-shaped curve that describes the distribution of many types of data; most scores fall near the mean and fewer and fewer near the extremes

Question 9

Representative samples are better than….

Answer 9

Biased samples

Question 10

Less-variable observations are more reliable than those….

Answer 10

That are more variable

Question 11

More cases are…

Answer 11

Better than fewer

Question 12

Statistical significance

Answer 12

A statistical statement of how likely it is that an obtained result occurred by chance

Question 13

Artistically significant indicated the…

Answer 13

Likelihood that a result will happen by chance but does now say anything about the importance of the result