Appendix: Statistics and Research Methods

Question 1

measures of central tendency

Answer 1

1. Mean- the average of the sample
2. Median- the middle number in a data set
3. Mode- the most frequently recurring number in a data set

Question 2

measures of variability

Answer 2

1. Range- difference between the smallest number and the largest number in a sample
2. Standard Deviation- a measure of how much each individual number differs from the mean

Question 3

sampling bias

Answer 3

occurs when a subset of a population is not chosen randomly and this skews the results of the study

Question 4

bias of selection from specific real area

Answer 4

a type of sampling bias in which people are selected in a physical space

Question 5

self-selection bias

Answer 5

a type of sampling bias in which the people being studied have some control over whether or not to participate in a study

Question 6

Pre screening Bias

Answer 6

A type of sampling bias in which how volunteers are screened night skew a sample