Statistics

Question 1

Descriptive Statistics

Answer 1

Describes or displays sets of data.

Question 2

Histogram

Answer 2

A bar graph depicting a frequency distribution.

Question 3

Measures of Central Tendency

Answer 3

Mean: average, extreme scores can distort mean

Mode: occurs most often
Median: middle

Question 4

Skewed Distribution

Answer 4

Positive skew: Skewed left, more low scores

Negative skew: Skewed right, most high scores

Question 5

Normal Distribution

Answer 5

Mean, median, and more are all the same - 68-95-99.

Question 6

Range

Answer 6

The difference between the highest and lowest scores in a distribution.

Question 7

Standard Deviation

Answer 7

Computed measure of how much scores vary around the mean - 68-95-99 -

Question 8

Inferential Statistics

Answer 8

Sees whether results are due to chance

Question 9

Statistical Significance

Answer 9

Possibility that the differences in results between the experimental and control groups could have occurred by chance is not more than 5 percent (calculated by comparing the mean of the control and experimental groups)

Question 10

P-value

Answer 10

p-value of less than 0.5 means results are not due to chance

p-value of more than 0.5 means results are generalizable and significant

Question 11

Null Hypothesis

Answer 11

The assumption that there is no difference between the groups being studied.