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?: 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
| Year | Number of Marriages |
|---|---|
| 1 | 40,650 |
| 2 | 40,812 |
| 3 | 41,300 |
| 4 | 41,450 |
| 5 | 39,594 |
| 6 | 40,734 |
| 7 | 39,993 |
| 8 | 38,814 |
| 9 | 37,828 |
| 10 | 35,716 |
What is the median number of marriages?
( ) 41,886 ( ) 38,997 ( ) 39,594 (X) 40,321
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