Measures of Dispersion - Quiz

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Measures of Dispersion

?: Summary statistics for two samples of data are

Sample 1:
mean = 19 variance = 10

Sample 2:
mean = 10 variance = 19

Which sample has the larger spread of observations?

( ) Sample 1 (X) Sample 2

?: Consider the following unordered set of data:

4 4 4 9 5 0 5 1 5 3 5 7 5 8 6 2 6 6 6 6 6 8 7 1 7 5 7 7 8 0 8 5

What is the InterQuartile Range (IQR) for this dataset?

( ) 2 (X) 3 ( ) 3.5 ( ) 4.25

?: Imagine that the number of marriages registered over a 10 year period were as follows:

Table 1. Number of registered marriages

What is the median number of marriages?

( ) 41,886 ( ) 38,997 ( ) 39,594 (X) 40,321

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