Concept explainers
To describe the centre and spread of data.
Answer to Problem 7PPS
5-number summary.
Explanation of Solution
Given information:
32,44,50,49,21,12,27,41,48,30,50,23,37,16,49,53,33,25,35,40,48,39,50,24,15,29,37,50,36,43,49,44,46,27,42,47
Formula used:
Lower quartile=
Medium quartile=
Upper quartile=
Where N is number of tiles/data points
Calculation:
Sorting data,
12,15,16,21,23,24,25,27,27,29,30,32,33,35,36,37,37,39,40,41,42,43,44,44,46,47,48,48,49,49,49,50,50,50,50,53
Total data points=36
The 5 number summary is used because, the total data is too big to calculate for mean and standard deviation.
Maximum=53
Minimum=12
Median
Pair these 18th and 19th term. Lower half has lower quartile and upper half has upper quartile,
Data point in lower half=17
Lower quartileLower quartile=
Data point in upper half=17
Upper quartile=
Upper quartile=
Graph:
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