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Measures Of Central Tendency

Question
CBSEENST11024207
Wired Faculty App

Calculate the median of following data :

145, 130, 200, 210, 198, 234, 159, 160, 178, 257, 260, 300, 345, 360 and 390.

Solution

By arranging data we get the following data:

130, 145, 159, 160, 178, 198, 200, 210, 234.1 257, 260, 300, 345, 360 and 390.

Median     =   Value of  N + 1     item
                                  2
               =   15 + 1
                        2
               = Value of 7th item
Value of 8th item  = 210

Some More Questions From Measures of Central Tendency Chapter

The following series relates to the daily income of workers employed in a firm. Compute the (a) highest income of lowest 50% workers, (6) minimum income earned by the top 25% and (c) maximum income earned by lowest 25% workers.

Daily Income (in Rs.)

Number of Workers

10-14

15-19

20-24

25-29

30-34

35-39

5

10

15

20

10

5

The following table gives production yield in kg. per hectare of wheat of 150 arms in a village. Calculate the mean, median and mode production yield.

Production yield (kg. per hectare)

50-53

53-56

56-59

59-62

62-65

65-68

68-71

71-74

74-77

Number of farms

3

8

14

30

36

28

16

10

5

The size of land holdings of 380 families in a village is given below. Find the median size of land holdings.

Size of Land Holdings (in acres)

Number of families

less than 100

100-200

200-300

300-400

400 and above

40

89

148

64

39

What do you mean by 'Average'?

Pocket expenditures of 6 students are (Rs.) 6,12,18,24,30 and 36 respectively. Find out arithmetic mean.

Name various kinds of statistical averages?

Give formula of weighted averages.

Give formula of calculating arithmetic average of a continuous series.

What is arithmetic mean?

Define median.

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