Question 4 (i)
The heights of 50 students, measured to the nearest centimeters, have been found to be as follows:
$$\begin{array}{cccccccccc}161& 150& 154& 165& 168& 161& 154& 162& 150& 151\\ 162& 164& 171& 165& 158& 154& 156& 172& 160& 170\\ 153& 159& 161& 170& 162& 165& 166& 168& 165& 164\\ 154& 152& 153& 156& 158& 162& 160& 161& 173& 166\\ 161& 159& 162& 167& 168& 159& 158& 153& 154& 159\end{array}$$
(i) Represent the data given above by a grouped frequency distribution table, taking the class intervals as 160 - 165, 165 - 170, etc.

Question 4 (i)
The heights of 50 students, measured to the nearest centimeters, have been found to be as follows:
$\begin{array}{cccccccccc}161& 150& 154& 165& 168& 161& 154& 162& 150& 151\\ 162& 164& 171& 165& 158& 154& 156& 172& 160& 170\\ 153& 159& 161& 170& 162& 165& 166& 168& 165& 164\\ 154& 152& 153& 156& 158& 162& 160& 161& 173& 166\\ 161& 159& 162& 167& 168& 159& 158& 153& 154& 159\end{array}$
(i) Represent the data given above by a grouped frequency distribution table, taking the class intervals as 160 - 165, 165 - 170, etc.

Question 4 (ii)
The heights of 50 students, measured to the nearest centimeters, have been found to be as follows:
$\begin{array}{cccccccccc}161& 150& 154& 165& 168& 161& 154& 162& 150& 151\\ 162& 164& 171& 165& 158& 154& 156& 172& 160& 170\\ 153& 159& 161& 170& 162& 165& 166& 168& 165& 164\\ 154& 152& 153& 156& 158& 162& 160& 161& 173& 166\\ 161& 159& 162& 167& 168& 159& 158& 153& 154& 159\end{array}$
$\begin{array}{cc}\text{Height (in cm)}& \text{Number of studentss(frequency)}\\ 150-155& 12\\ 155-160& 9\\ 160-165& 14\\ 165-170& 10\\ 170-175& 5\\ \text{Total}& 50\end{array}$
(ii) What can you conclude about their heights from the table?

Now look at this problem: the heights of 40 people, in centimeters, are given below. Make a frequency table of this data.