Chhattisgarh Board Solutions for Exercise 2: Exercise

The value of Pi up to $50$ places of decimals given below:

$3.14159265358979323846264338327950288419716939937510$

Which is the number that occurs the least?

The value of Pi up to $50$ places of decimals given below:

$3.14159265358979323846264338327950288419716939937510$

Which is the number that occurs the most? What can be concluded from this?

The per hectare production of rice in $40$ fields of a village in quintals is given below, make a frequency distribution for this data.

$$\begin{gathered} 31,20,25,18,28,20,18,26,15,12,25,16,30,20,22,24,45,28,30, \\ 16,30,40,20,30,20,30,28,47,40,35,28,45,20,35,32,18,20,26,23,16 \end{gathered}$$

Write the conclusions that can be drawn from this frequency distribution table.

$40$ children were asked about the number of hours they watched TV in the previous week, their responses were:

$$\begin{gathered} 1,5,6,2,7,4,10,12,5,8,10,12,36,22,6,15,3,1,2,4,21,16,17,13,14, \\ 2,7,9,23,26,31,33,5,35,25,26,29,30,9,31 \end{gathered}$$

Make a frequency distribution table of class size $5$.

$40$ children were asked about the number of hours they watched TV in the previous week, their responses were:

$$\begin{gathered} 1,5,6,2,7,4,10,12,5,8,10,12,36,22,6,15,3,1,2,4,21,16,17,13,14, \\ 2,7,9,23,26,31,33,5,35,25,26,29,30,9,31 \end{gathered}$$

What is the lower limit of the first class?

$40$ children were asked about the number of hours they watched TV in the previous week, their responses were:

$$\begin{gathered} 1,5,6,2,7,4,10,12,5,8,10,12,36,22,6,15,3,1,2,4,21,16,17,13,14, \\ 2,7,9,23,26,31,33,5,35,25,26,29,30,9,31 \end{gathered}$$

Find the limits of the fourth class?

$40$ children were asked about the number of hours they watched TV in the previous week, their responses were:

$$\begin{gathered} 1,5,6,2,7,4,10,12,5,8,10,12,36,22,6,15,3,1,2,4,21,16,17,13,14, \\ 2,7,9,23,26,31,33,5,35,25,26,29,30,9,31 \end{gathered}$$

What is the class mark of $7\mathrm{th}$ class?

$40$ children were asked about the number of hours they watched TV in the previous week, their responses were:

$$\begin{gathered} 1,5,6,2,7,4,10,12,5,8,10,12,36,22,6,15,3,1,2,4,21,16,17,13,14, \\ 2,7,9,23,26,31,33,5,35,25,26,29,30,9,31 \end{gathered}$$

How many children watched television for $20$ or more hours in the week?