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18 Aug 2021: PIB Summary & Analysis

TABLE OF CONTENTS 1. MoU between India and Bangladesh 2. MoU between India and the USA 3. Kigali Amendment 4. India – Australia 5. Indian Navy... View Article

The enrolment in a school during six consecutive years was as follows: 1555, 1670, 1750, 2013, 2540, 2820. Find the mean enrolment of the school for this period.

Solution 1555, 1670, 1750, 2013, 2540, 2820 Calculation of mean Mean enrolment = Sum of all observations/ Number of observations = (1555 +... View Article

The marks (out of 100) obtained by a group of students in a science test are 85, 76, 90, 85, 39, 48, 56, 95, 81 and 75. Find the: (i) Highest and the lowest marks obtained by the students. (ii) Range of the marks obtained. (iii) Mean marks obtained by the group.

Solution First will arrange the marks obtained by a group of students in a science test in an ascending order, = 39, 48, 56, 75, 76, 81,... View Article

Following table shows the points of each player scored in four games. Now answer the following questions: (i) Find the mean to determine A’s average number of points scored per game. (ii) To find the mean number of points per game for C, would you divide the total points by 3 or by 4? Why? (iii) B played in all the four games. How would you find the mean? (iv) Who is the best performer?

Player Game 1 Game 2 Game 3 Game 4 A 14 16 10 10 B 0 8 6 4 C 8 11 Did not Play 13 Solution (i)... View Article

A cricketer scores the following runs in eight innings: 58, 76, 40, 35, 46, 45, 0, 100. Find the mean score.

Solution 58, 76, 40, 35, 46, 45, 0, 100 in eight innings Calculation of mean Mean score = (Total runs scored by the cricketer in all... View Article

Find the mean of the first five whole numbers.

Solution The first five Whole numbers are 0, 1, 2, 3, and 4. Calculation of mean of first five whole numbers Mean = (Sum of first five whole... View Article

Organise the following marks in a class assessment, in a tabular form. 4, 6, 7, 5, 3, 5, 4, 5, 2, 6, 2, 5, 1, 9, 6, 5, 8, 4, 6, 7 (i) Which number is the highest? (ii) Which number is the lowest? (iii) What is the range of the data? (iv) Find the arithmetic mean.

Solution Let us first arrange the given set of marks in ascending order = 1, 2, 2, 3, 4, 4, 4, 5, 5, 5, 5, 5, 6, 6, 6, 6, 7, 7, 8, 9 Let us... View Article

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18 Aug 2021: PIB Summary & Analysis

The enrolment in a school during six consecutive years was as follows: 1555, 1670, 1750, 2013, 2540, 2820. Find the mean enrolment of the school for this period.

The marks (out of 100) obtained by a group of students in a science test are 85, 76, 90, 85, 39, 48, 56, 95, 81 and 75. Find the: (i) Highest and the lowest marks obtained by the students. (ii) Range of the marks obtained. (iii) Mean marks obtained by the group.

A cricketer scores the following runs in eight innings: 58, 76, 40, 35, 46, 45, 0, 100. Find the mean score.

Find the mean of the first five whole numbers.

Organise the following marks in a class assessment, in a tabular form. 4, 6, 7, 5, 3, 5, 4, 5, 2, 6, 2, 5, 1, 9, 6, 5, 8, 4, 6, 7 (i) Which number is the highest? (ii) Which number is the lowest? (iii) What is the range of the data? (iv) Find the arithmetic mean.

Find the range of heights of any ten students of your class.

A vehicle covers a distance of 43.2 km in 2.4 litres of petrol. How much distance will it cover in one litre of petrol?

Find: 2.73 ÷ 1.3

Find: 37.8 ÷ 1.4

Find: 76.5 ÷ 0.15

Find: 7.75 ÷ 0.25

Find: 0.5 ÷ 0.25

Find: 30.94 ÷ 0.7

Find: 3.25 ÷ 0.5

Find: 36 ÷ 0.2

Find: 7 ÷ 3.5

Find: 0.5 ÷ 1000

Find: 128.9 ÷ 1000

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