Statistics & Probability (IMO- Mathematics Olympiad Class 10): Questions 64 - 68 of 80

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Question number: 64

» Statistics & Probability

MCQ▾

Question

The average temperatures of Tuesday, Wednesday and Thursday was 42 . The average temperature of Wednesday, Thursday and Friday was 47 . If the temperature on Tuesday was 43 , then the temperature on Friday was ________.

Choices

Choice (4) Response

a.

58

b.

53

c.

50

d.

49

Question number: 65

» Statistics & Probability

MCQ▾

Question

The algebraic sum of the deviations of a frequency distribution from its mean is ________

Choices

Choice (4) Response

a.

A non-zero number

b.

Always negative

c.

Always positive

d.

0

Question number: 66

» Statistics & Probability

MCQ▾

Question

The mean of 10 observations is 5.5 . if each observation is multiplied by 2, then what is the new mean?

Choices

Choice (4) Response

a.

16

b.

15

c.

11

d.

17

Question number: 67

» Statistics & Probability

MCQ▾

Question

Two dice are thrown at a time. The probability that the difference of the numbers shown on the dice is 3 is ________

Choices

Choice (4) Response

a.

16

b.

17

c.

13

d.

58

Question number: 68

» Statistics & Probability

MCQ▾

Question

The average temperatures of Monday, Tuesday, Wednesday and Thursday was 50 . The average temperature of Tuesday, Wednesday, Thursday and Friday was 60 . If the temperature on Monday was 40 , then the temperature on Friday was ________.

Choices

Choice (4) Response

a.

50

b.

60

c.

80

d.

63

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