Meaures of central Tendency and Dispersion Flashcards
1
Q
What is a measure of central tendency?
A
A typical value for the data set.
2
Q
What are the most common measures of central tendency?
A
Mean, mode and median.
3
Q
When can the mean be too sensitive?
A
When there is an outlier.
4
Q
What is a measure of dispersion?
A
An indication of how spread out the data is.
5
Q
What are the most common measures of dispersion?
A
Range and standard deviation.
6
Q
How much of the population is represented by one standard deviation?
A
68%
7
Q
How much of the population is represented by two standard deviations?
A
95%
8
Q
How much of the population is represented by three standard deviations?
A
99.5%
