# Mathematics-Statistics [NSTSE (National Science Talent Search Exam- Unified Council) Class 9]: Questions 1 - 9 of 83

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## Question 1

Statistics
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### Question

MCQ▾

The arithmetic mean of first six natural numbers is

### Choices

Choice (4)Response
a.3
b.28
c.4
d.7

## Question 2

Statistics
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### Question

MCQ▾

The average weight of sample of 6 Oranges is 30 g. Later it was found that the weighing machine had shown the weight of each Orange 5 g less. The correct average weight of an Orange is

### Choices

Choice (4)Response
a.75 g
b.35 g
c.55 g
d.40 g

## Question 3

Statistics
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### Question

MCQ▾

The mean of 7 observations is 58. If one observation, namely 4 is deleted, the new mean is

### Choices

Choice (4)Response
a.61
b.62
c.65
d.67

## Question 4

Statistics
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### Question

MCQ▾

The runs scored by Sachin in 7 test matches are 133,140,138,150,156,148 and 143 respectively. Find his mean.

### Choices

Choice (4)Response
a.144
b.133
c.156
d.148

## Question 5

Statistics
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### Question

MCQ▾

The runs scored by Mahi in 5 test matches are 150,163,158,160 and 164 respectively. Find his mean.

### Choices

Choice (4)Response
a.164
b.158
c.150
d.159

## Question 6

Statistics
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### Question

MCQ▾

The mean of first five multiples of 5 is

### Choices

Choice (4)Response
a.5
b.15
c.25
d.20

## Question 7

Statistics
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MCQ▾

The value of is

### Choices

Choice (4)Response
a.
b.
c.
d.

## Question 8

Statistics
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### Question

MCQ▾

The mean of first eight odd numbers is

### Choices

Choice (4)Response
a.5
b.7.75
c.12
d.8

## Question 9

Statistics
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### Question

MCQ▾

The price (in Rs. ) of 7 Pens are 15,21,14,25,28,19,31. The median is

### Choices

Choice (4)Response
a.25
b.19
c.31
d.21