Statistics Test

Result

Statistics Test - 5

Score
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Rank
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TIME Taken - -

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Weekly Quiz Competition

Question 1
1 / -0

Class size of a distribution having 28, 34, 40, 46 and 52 as its class marks is

A
3

B
4

C
5

D
6

Solution

class size is the difference between two consecutive values of the class mark.

Here, the difference between two consecutive class mark is 6

i.e 34 − 28 = 6
Question 2
1 / -0

Given the class intervals 0-10, 10-20, 20-30,…, then 10 is considered in class

A
0-10

B
0-20

C
10-20

D
10-30

Solution

As the classes are continuous, the upper limits does not include in that particular class.
Question 3
1 / -0

Given the class intervals 1-10, 11-20, 21-30, …, then 20 is considered in class

A
11-20

B
11-30

C
21-30

D
15-25

Solution

In a discontinuous class both lower and upper limits belong to that particular class.
Question 4
1 / -0

The class marks of a frequency distribution are as given below: 38, 43, 48, 53, 58. The class corresponding to the class mark 43 is

A
38.5-48.5

B
38-48

C
35.5-45.5

D
40.5 – 45.5

Solution

As the class size = 5, Class interval is got by subtracting and adding 2.5 to 43
Question 5
1 / -0

The width of each of five continuous classes in a frequency distribution is 5 and the lower class limit of the lowest class is 10. The upper class limit of the highest class is

A
40

B
15

C
25

D
35

Solution

The classes are 10-15,15-20,20-25,25-30,30-35 so that upper limit of the highest class is 35