# Statistics and Probability (IMO- Mathematics Olympiad (SOF) Class 9): Questions 1 - 6 of 101

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## Question number: 1

» Statistics and Probability

MCQ▾

### Question

A die is rolled 10,500 times. The frequency of each outcome is shown in the table. What is the empirical probability of the outcomes of multiples of 3?

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 2

» Statistics and Probability

MCQ▾

### Question

Two dice are thrown. What is the probability of obtaining a total of 10 or 11?

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 3

» Statistics and Probability

MCQ▾

### Question

The median of the following numbers 99,54,78,65,35,45,66 is________

### Choices

Choice (4) Response

a.

66

b.

35

c.

54

d.

65

## Question number: 4

» Statistics and Probability

MCQ▾

### Question

The mean weight of 80 students in a class is 60 kg. The mean weight of boys is 70 kg while that of the girls is 50 kg. the number of boys and girls are________

### Choices

Choice (4) Response

a.

35,75

b.

45,35

c.

40,40

d.

10,30

## Question number: 5

» Statistics and Probability

MCQ▾

### Question

If a number x is chosen at random from the numbers 1,2, 3 and the number y is selected from 1,4, 9, and then is________

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 6

» Statistics and Probability

MCQ▾

### Question

A contractor employed 18 labourers at Rs. 12 each per day, 10 labourers at Rs. 13.50 each per day, 5 labourers at Rs. 25 each per day and 2 labourers at Rs. 42 each per day. The average wages paid is ________

### Choices

Choice (4) Response

a.

Rs. 28

b.

Rs. 24

c.

Rs. 20

d.

Rs. 16

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