NCERT Solutions for Chapter: Introduction to Graphs, Exercise 1: Exercise

The following table shows the rainfall recorded for the same duration in two cities:

Plot the graph. Find the average rainfall for both the cities.

Construct a pie chart to depict the given data.

The following table shows the number of child births per $1000$ population of a state per year for every decade from $1971$ to $2011$.

Draw a line graph to represent the data.

The number of hours devoted to studies in a day by $30$ students of a particular class as follows:

$$\begin{gathered} 6 7 4 5 8 6 7 5 8 3 \\ 8 5 3 6 9 10 9 6 9 7 \\ 9 6 2 7 10 5 8 7 10 9 \end{gathered}$$

Prepare a frequency distribution table and represent the data using histogram.

The bar graph shows the number of hours spent by a programmer on computers per week. Read the graph carefully and answer the following question:

The median of the weekly time spent on computers is _____ hours.

Read the following bar graph and answer the questions

In which year is the difference between the sales of $A$ and sales of $B$ the highest?

The daily wages of $25$ workers working in a factor are as follows:

$$\begin{gathered} 260 330 250 240 250 \\ 220 290 240 340 300 \\ 340 230 350 300 340 \\ 280 230 220 330 220 \\ 200 320 330 270 310 \end{gathered}$$

Represent the above data in the form of a frequency distribution with class size as $10$.

The bar graph shows the number of hours spent by a programmer on computers per week. Read the graph carefully and answer the following question:

The ratio of the number of hours spent in the first week to that of the number of hours spent in the second week is _____.