Measure of Central Tendency

Question 1

Define the term Quantitative

Answer 1

Something that is measured or counted

Question 2

Define the term Categorical

Answer 2

Nominal or Ordinal data

Question 3

Define Descriptive statistics

Answer 3

Measures of central tendency and measures of dispersion

Question 4

State the three measures of central tendency

Answer 4

Mean

Median

Mode

Question 5

Define the term Mean

Answer 5

Calculated by summing up all scores and dividing by the number of scores (N)

Question 6

Describe the Advantages and Disadvantages of the Mean

Answer 6

Advantage: considers all information. Provides basis for many additional calculations. Appropriate for quantitative but not categorical data.

Disadvantage: very sensitive measure to extreme scores

Question 7

Define the term Median

Answer 7

Mid point of a set of ranked scores

Calculated by putting all scores in rank order

Question 8

Describe the advantages and disadvantages of the Median

Answer 8

Advantage: unaffected by extreme scores

Disadvantage: doesn’t account for all data. Not always real data

Question 9

Define the term Mode

Answer 9

Most frequently occurring value in a set of data

Question 10

Describe the Advantages and Disadvantages of the Mode

Answer 10

Advantages: quick estimate. Only measure that can be used for nominal data. Disregards extreme scores.

Disadvantages: unstable