List I (measures of Dispersion) | List II (Formula) | ||
A. | Range | I. | \(\sqrt[2]{\sum d^2/N}\) |
B. | Mean deviation | II. | Q3-Q1 |
C. | Standard Deviation | III. | H.V - S.V. |
D. | Interquartile Range | IV. | ∑dx / N |
The following table shows the ages of the patients admitted in a hospital during a year. Find the mode and the median of these data.
\[\begin{array}{|c|c|c|c|c|c|c|} \hline Age (in years) & 5-15 & 15-25 & 25-35 & 35-45 & 45-55 & 55-65 \\ \hline \text{Number of patients} & \text{6} & \text{11} & \text{21} & \text{23} & \text{14} & \text{5} \\ \hline \end{array}\]
Find the mean and mode of the following data:
Class | 15--20 | 20--25 | 25--30 | 30--35 | 35--40 | 40--45 |
Frequency | 12 | 10 | 15 | 11 | 7 | 5 |
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