Important Questions: Statistics - Class 10 MCQ

# Important Questions: Statistics - Class 10 MCQ

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## 10 Questions MCQ Test Mathematics (Maths) Class 10 - Important Questions: Statistics

Important Questions: Statistics for Class 10 2024 is part of Mathematics (Maths) Class 10 preparation. The Important Questions: Statistics questions and answers have been prepared according to the Class 10 exam syllabus.The Important Questions: Statistics MCQs are made for Class 10 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Important Questions: Statistics below.
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Important Questions: Statistics - Question 1

### While computing mean of a grouped data, we assume that the frequencies are

Important Questions: Statistics - Question 2

### di is the deviation of xi from assumed mean a.

Detailed Solution for Important Questions: Statistics - Question 2

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Important Questions: Statistics - Question 3

### Construction of a cumulative frequency table is useful in determining the

Detailed Solution for Important Questions: Statistics - Question 3

The correct answer is b

A cumulative frequency table helps to determine the median of the series.

Important Questions: Statistics - Question 4

Mean of 100 items is 49. It was discovered that three items which should have been 60, 70, 80 were wrongly read as 40, 20, 50 respectively. The correct mean is

Detailed Solution for Important Questions: Statistics - Question 4

Sum of 100 observations = 100 x 49 = 4900
Correct sum = 4900 - [40 + 20 + 50] + [60 + 70 + 80] = 5000
∴ Correct mean = 5000/100 = 50

Important Questions: Statistics - Question 5

In the formula, Mode

Detailed Solution for Important Questions: Statistics - Question 5

The formula to find the mode of the grouped data is: Mode = l + [(f1-f0)/(2f1-f0-f2)]×h. Where, l = lower class limit of modal class, h = class size, f1 = frequency of modal class, f0 = frequency of class proceeding to modal class, f2 = frequency of class succeeding to modal class.

Important Questions: Statistics - Question 6

Choose the correct answer from the given four options : In the formula
for finding the mean of grouped data are deviation from a of

Important Questions: Statistics - Question 7

For the following distribution:

The sum of upper limits of the median class and model class is

Important Questions: Statistics - Question 8

While computing mean of grouped data, we assume that the frequencies are

Important Questions: Statistics - Question 9

Consider the following frequency distribution of the height of 60 students of a class:

The sum of the lower limit of the modal class and upper limit of the median class is

Detailed Solution for Important Questions: Statistics - Question 9

Important Questions: Statistics - Question 10

For the following distribution:

the modal class is

## Mathematics (Maths) Class 10

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## Mathematics (Maths) Class 10

116 videos|420 docs|77 tests