Statistics Model Questions Set 1 Practice Questions Answers Test With Solutions & More Shortcuts

Question : 1

In Statistics, a suitable graph for representing the partitioning of total into subparts is

a) A pictograph

b) A histogram

c) An ogive

d) A pie chart

Answer »

Question : 2

Consider the following statements in respect of a histogram:
I. The histogram consists of vertical rectangular bars with a common base such that there is no gap between consecutive bars.
II. The height of the rectangle is determined by the frequency of the class it represents.
Which of the statements given above is/are correct?

a) Only II

b) Both I and II

c) Only I

d) Neither I nor II

Answer »

Question : 3

The arithmetic mean of 10 numbers was computed as 7.6. It was later discovered that a number 8 was wrongly read as 3 during the computation. What should be the correct mean?

a) 7.6

b) 8.1

c) 7.1

d) 8.6

Answer »

Question : 4

Read the following information and answer the four items that follow .Let the distribution of number of scooters of companies X and Y sold by 5 showrooms (A, B, C, D and E) in a certain year be denoted by S1 and the distribution of number of scooters of only company X sold by the five showrooms in the same year be denoted by S2

Number of scooters of company Y sold by showroom E is what per cent of the number of scooters of both companies sold by showroom C ?

a) 54

b) 55

c) 52

d) 56

Answer »

Question : 5

Consider the following statements in respect of the set S = {1, 2, 3, ..., n}.
I. ${(n + 1)}/2$ is the median of the numbers in S.
II. n is the mode of the numbers in S.
Which of the above statements is/are correct?

a) Only II

b) Both I and II

c) Only I

d) Neither I nor II

Answer »