The number of pages of a book Ninad read for five consecutive days were 60, 50, 54, 46, 50. Find the average number of pages he read everyday.
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Statistics question types
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Sample Questions
Statistics questions
One sample from each question group in this chapter. Select any group above to see the full set with answer keys.
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Compare and discuss a percentage bar diagram and a subdivided bar diagram. Use it to learn the graphs in the subjects like Science, Geography.
The number of Science and Mathematics projects submitted by Model high school, Nandpur in last 20 years at the state level science exhibition is : 2, 3 ,4, 1, 2, 3, 1, 5, 4, 2, 3, 1, 3, 5, 4, 3, 2, 2, 3, 2.
Prepare a frequency table and find the mean of the data.
Prepare a frequency table and find the mean of the data.
The number of members in the 40 families in Bhilar are as follows:
1, 6, 5, 4, 3, 2, 7, 2, 3, 4, 5, 6, 4, 6, 2, 3, 2, 1, 4, 5, 6, 7, 3, 4, 5, 2, 4, 3, 2, 3, 5, 5, 4, 6, 2,3, 5, 6, 4, 2. Prepare a frequency table and And the mean of members of 40 families.
1, 6, 5, 4, 3, 2, 7, 2, 3, 4, 5, 6, 4, 6, 2, 3, 2, 1, 4, 5, 6, 7, 3, 4, 5, 2, 4, 3, 2, 3, 5, 5, 4, 6, 2,3, 5, 6, 4, 2. Prepare a frequency table and And the mean of members of 40 families.
The following table shows the electricity (in units) used by 25 families of Eklara village in a month of May. Complete the table and answer the following questions.
i. How many families use 45 units electricity ?
ii. State the score, the frequency of which is 5.
iii.Find $N$, and $\sum f_i \times x_i$.
iv. Find the mean of electricity used by each family in the month of May.
View full solution →| $x _{ i }$ | No. of families (frequency) $f _{ i }$ | $f _{ i } \times x _{ i }$ |
| 30 | 4 | |
| 45 | 6 | |
| 60 | 12 | |
| 75 | 8 | |
| 90 | 3 | |
| N = __ | $\sum f_i \times x_i=$ |
ii. State the score, the frequency of which is 5.
iii.Find $N$, and $\sum f_i \times x_i$.
iv. Find the mean of electricity used by each family in the month of May.
In the following table, data of the transport means used by students in 8th standard for commutation between home and school is given. Draw a subdivided bar diagram to show the data.
(Scale: On Y axis: 1 cm = 500 students)
(Scale: On Y axis: 1 cm = 500 students)
| Means of commutation\Town | Paithan | Yeola | Shahapur |
| Cycle | 3250 | 1500 | 1250 |
| Bus and auto | 750 | 500 | 500 |
| On foot | 1000 | 1000 | 500 |
In the following table number of trees planted in the year 2016 and 2017 in four towns is given. Show the data with the help of subdivided bar graph.
| Year\Town | karjat | Wadgaon | Shivapur | Khandala |
| 2016 | 150 | 250 | 200 | 100 |
| 2017 | 200 | 300 | 250 | 150 |
The number of boys and girls, in std 5 to std 8 in a Z.P. School is given in the table. Draw a subdivided bar graph to show the data. (Scale : On Y axis, 1cm = 10 students)
| Standard | 5th | 6th | 7th | 8th |
| Boys | 34 | 26 | 21 | 25 |
| Girls | 17 | 14 | 14 | 20 |
i. State the type of the graph.
ii. How much is the savings of Vaishali in the month of April ?
iii. How much is the total of savings of Saroj in the months March and April ?
iv. How much more is the total savings of Savita than the total savings of Megha ?
v. Whose savings in the month of April is the least ?
The following data is collected in a survey of some students of 10th standard from some schools. Draw the percentage bar graph of the data.
| School | 1st | 2nd | 3rd | 4th |
| Inclination towards science stream | 90 | 60 | 25 | 16 |
| Inclination towards commerce stream | 60 | 20 | 25 | 24 |
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