Data Handling Class 7
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A bag contains 5 white and 9 red balls. One ball is drawn at random from the bag. Find the probability of getting
(a) a white ball
(b) a red ball
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.
Find the range of heights of any ten students of your class.
A coin and a die are tossed once together. Find the total number of outcomes.
A dice is tossed once. Find the probability of getting
(i) a number 5
(ii) a number greater than 5
(iii) a number less than 5
(iv) an odd number
(v) an even number
(vi) a number greater than 6
Find the mean of the first five whole numbers.
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.
Find the mean of the first five whole numbers.
The data given below shows the production of motorbikes in a factory for some months of two consecutive years.
Study the table given above and the answer the following questions:
(a) Draw a double bar graph using an appropriate scale to depict the above information and compare them.
(b) In which year was the total output maximum?
(c) Find the mean production for the year 2007.
(d) For which month was the difference between the production for the two years is the maximum?
(e) In which month for the year 2008, the production was the maximum?
(f) In which month for the year 2007, the production was the least?
A coin and a die are tossed once together. Find the total number of outcomes.
Find the range of heights of any ten students of your class.
The following bar graph shows the number of books sold by a publisher during the five consecutive years. Read the bar graph and answer the following questions:
(i) About how many books were sold in 2008, 2009 and 2012 years?
(ii) In which years were 575 books were sold?
(iii) In which years were the minimum number of books sold?
Find the mean and median of first five prime numbers.
Find the mode of the following data:
24, 26, 23, 26, 22, 25, 26, 28
The marks obtained (out of 10) by 80 students in a class test are given below:
Find the mode of the above data.
A bag contains 5 white and 9 red balls. One ball is drawn at random from the bag. Find the probability of getting
(a) a white ball
(b) a red ball
Find the average of the numbers 8, 13, 15.
A dice is tossed once. Find the probability of getting
(i) a number 5
(ii) a number greater than 5
(iii) a number less than 5
(iv) an odd number
(v) an even number
(vi) a number greater than 6
Find the median of the following data:
8, 6, 10, 12, 14
Find the median of the following data:
20, 14, 6, 25, 18, 13, 19, 10, 9, 1