From the following frequency distribution, find the median class: | ||||
Cost of living index | 1400 ? 1550 | 1550 ? 1700 | 1700 ? 1850 | 1850 ? 2000 |
Number of weeks | 8 | 15 | 21 | 8 |
Answer:
Cost of living index No. of weeks (f) c.f. 1400 ? 1550 8 8 1550 ? 1700 15 23 1700 ? 1850 21 44 1850 ? 2000 8 52 \[\sum{f=52}\] Here, \[n=52\] \[\Rightarrow \frac{n}{2}=\frac{52}{2}=26\] 26 will lie in the class interval 1700 ? 1850. \[\therefore \] Median class is 1700 ? 1850.
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