Definitions 3

Question 0

Normal distribution

Answer 0

A naturally occurring frequency distribution where many of the values cluster around the mean, and where there are few high and low values away from the mean

Question 1

Cluster sampling

Answer 1

Where respondents are chosen for interview in a few locations, to reduce the cost of research, rather than being spread evenly across the population

Question 2

Population

Answer 2

The total number of consumers within a given group

Question 3

Quota sampling

Answer 3

Where respondents are selected for interview in a non-random manner in the same proportion as they exist in the whole population

Question 4

Random sampling

Answer 4

Where respondents are selected for interview without method

Question 5

Representative sampling

Answer 5

A sample which has the same characteristics as the population

Question 6

Sampling bias

Answer 6

Where the sample chosen is not representative of the population

Question 7

Sample size

Answer 7

The number of people chosen for the sample from the whole population

Question 8

Snowballing

Answer 8

A non-random method of market research where a small number of selected respondents are asked to nominate further potential respondents for interview and so on.

Question 9

Standard deviation

Answer 9

A measure of the average difference of each result from the mean