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level: Central tendency

Questions and Answers List

level questions: Central tendency

QuestionAnswer
Strengths of using mean?-Makes use of all values -Good for interval data
Limitation of using mean?-It can be influeced by outliers, so it will be unrepresentative
Strength of using mode?Used for norminal data (collected in categories)
Limitation of using mode?Not useful when there are several modes
Strengths of using median?-Not affected by extreme scores -Good for ordinal data
Limitation of using median?No as sensitive as mean, doesn't use all data
Strength of range?Easy to calculate
Limitations of using range?-Affected by extreme values -Doesn't take into account all data
Strength of Standard deviation?Precise measurement where all peices of data is taken into account
Limitations of Standard deviation?-Difficult to calcualte -Affected by extreme scores
What is norminal data?Data that is formed by categories
What is ordinal data?Represented through ranking form (1 to 10 eg)
What is intrval data?Numeric scales that are precise units that are defined by size