# Statistics & Probability (IMO- Mathematics Olympiad Class 10): Questions 65 - 70 of 80

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## 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. 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.

b.

c.

d.

## Question number: 68

» Statistics & Probability

MCQ▾

### Question

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

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 69

» Statistics & Probability

MCQ▾

### Question

Two dice are thrown simultaneously. The probability of getting a doublet or a total of 4 is ________

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 70

» Statistics & Probability

MCQ▾

### Question

The king, queen and jack of Spades are removed from a deck of 52 playing cards and then well-shuffled. One card is selected from the remaining cards. The probability of getting a Spades is ________

### Choices

Choice (4) Response

a.

b.

c.

d.

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