Statistics I20765 marksNumerical: quartiles deciles percentilesMeasures of central tendency
Power Failure Duration Analysis The length of power failure in minutes are recorded in the following table. Find Q3, D2 and P40 and interpret the results. | Power failure time | 22 | 23 | 24 | 25 | 26 | 27 | 28 | Total | |---|---|---|---|---|---|---|---|---| | Frequency | 2 | 5 | 7 | 10 | 4 | 3 | 2
Power Failure Duration Analysis
The length of power failure in minutes are recorded in the following table. Find $Q_3$, $D_2$ and $P_{40}$ and interpret the results.
| Power failure time | 22 | 23 | 24 | 25 | 26 | 27 | 28 | Total |
|---|---|---|---|---|---|---|---|---|
| Frequency | 2 | 5 | 7 | 10 | 4 | 3 | 2 | 33 |
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Power Failure Time (x) 22 23 24 25 26 27 28 ------------------------ Frequency (f) 2 5 7 10 4 3 2 Total $N = 33$. x f cf --------- 22 2 2 23 5 7 24 7 14 25 10 24 26 4 28 27 3 31 28 2 33 For a discrete series we use position $\frac{k(N+1)}{n}$ (with $N+1 = 34$). $$Q3 = \text{value of } \frac{3(N+1...