If the standard deviation of a data is 0.012. Find the variance.

Assuming the variance of four numbers w, x, y, and z as 9. Find the variance of 5w, 5x, 5y and 5z.

If mode of a series exceeds its mean by 12, then mode exceeds the median by

Range of a data is equal to:

Range = Max Value – Min Value

Range = Max Value + Min Value

Range = (Max Value – Min Value)/2

Range = (Max Value + Min Value)/2

Relation between mean, median and mode is given by:

Mode = 2 Median – 3 Mean

Mode = 2 Median + 3 Mean

Mode = 3 Median – 2 Mean

Mode = 3 Median + 2 Mean

If the variance of the data is 121, the standard deviation of the data is:

121

11

12

21

The geometric mean of series having mean = 25 and harmonic mean = 16 is:

16

20

25

30

Find the median of 36, 72, 46, 42, 60, 45, 53, 46, 51, 49.

42

45.5

47.5

45

The coefficient of variation is computed by,

S.D/.Mean×100

S.D./Mean

Mean./S.D×100

Mean/S.D.

10.23

32.5

65

26.17

Find the variance of the first 10 natural numbers.

7.25

7

8.25

8

a + 2

2a

4a

a

Quiz/Test Summary

Title:
Statistics: Study and Manipulation of Data

Questions:
15

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