Gujarat Board Solutions Class 10 Maths Chapter 14 Statistics Ex 14.1

Gujarat Board Solutions Class 10 Maths Chapter 14 Statistics Ex 14.1

Gujarat Board Textbook Solutions Class 10 Maths Chapter 14 Statistics Ex 14.1

Question 1.
A survey was conducted by a group of students as a part of their environment awareness program, in which they collected the following data regarding the number of plants in 20 houses in a locality. Find the mean of plants per house.

Question 2.
Consider the following distribution of daily wages of 50 workers of a factory.

Question 3.
The following distribution shows the daily pocket allowance of children of a locality. The mean pocket allowance is ₹ 18. Find the missing frequency f.

Question 4.
Thirty women were examined in a hospital by a doctor and the number of heartbeats per minute were recorded and summarized as follows. Find the mean heartbeat per minute for these women, choosing a suitable method.

Question 5.
In a retail market, fruit vendors were selling mangoes kept in packing boxes. These boxes contained varying numbers of mangoes. The following was the distribution of mangoes according to the number of boxes.

Question 6.
The table below shows the daily expenditure on the food of 25 households in a locality.

Question 7.
To find out the concentration of SO₂ in the air (in parts per million, i.e. ppm), the data was collected for 30 localities in a certain n city and is presented below. Find the mean concentration of SO₂ in the air.

Question 8.
A class teacher has the following absent record of 40 students of a class for the whole term. Find the mean number of days a student was absent.

Solution:

Question 9.
The following table gives the literacy rate (in percentage) of 35 cities. Find the mean literacy rate.

Solution:

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