Thirty children were asked about the number of hours they watched TV programmes in the previous week- The results were found as follows- beginmatrix 1 - 6 - 2 - 3 - 5 -12 -5 -8 -4 -81110 -3 -4 - 12 -2 -8 -15 -1 - 17 - 6 -3 -2 -8 -5 - 9 -6 -8 -7 - 14 - 12end matrix i Make a grouped frequency distribution table for this data- taking class width 5 and one of the class intervals as 5- 10 -

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Standard IX

Mathematics

Grouped Frequency Table

Thirty childr...

Question

Thirty children were asked about the number of hours they watched TV programmes in the previous week. The results were found as follows:
$\begin{matrix} 1 & 6 & 2 & 3 & 5 & 12 & 5 & 8 & 4 & 8 10 & 3 & 4 & 12 & 2 & 8 & 15 & 1 & 17 & 6 3 & 2 & 8 & 5 & 9 & 6 & 8 & 7 & 14 & 12 \end{matrix}$
(i) Make a grouped frequency distribution table for this data, taking class width 5 and one of the class intervals as 5- 10.

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Solution

(i) Our class intervals will be 0−5, 5− 10,10 −15…..
The grouped frequency distribution table can be constructed as follows.
$\begin{matrix} H o u r s & N u m b e r o f c h i l d r e n 0 - 5 & 10 5 - 10 & 13 10 - 15 & 5 15 - 20 & 2 T o t a l & 30 \end{matrix}$

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Question 8 (i)
Thirty children were asked about the number of hours they watched TV programmes in the previous week. The results were found as follows:
$\begin{matrix} 1 & 6 & 2 & 3 & 5 & 12 & 5 & 8 & 4 & 8 10 & 3 & 4 & 12 & 2 & 8 & 15 & 1 & 17 & 6 3 & 2 & 8 & 5 & 9 & 6 & 8 & 7 & 14 & 12 \end{matrix}$
(i) Make a grouped frequency distribution table for this data, taking class width 5 and one of the class intervals as 5- 10.

Q. Question 8 (i)
Thirty children were asked about the number of hours they watched TV programmes in the previous week. The results were found as follows:

\begin{matrix} 1 & 6 & 2 & 3 & 5 & 12 & 5 & 8 & 4 & 8 10 & 3 & 4 & 12 & 2 & 8 & 15 & 1 & 17 & 6 3 & 2 & 8 & 5 & 9 & 6 & 8 & 7 & 14 & 12 \end{matrix}

(i) Make a grouped frequency distribution table for this data, taking class width 5 and one of the class intervals as 5- 10. [2 MARKS]

Q. Thirty children were asked about the number of hours they watched TV programmes in the previous week. The results were found as follows:

\begin{matrix} 1 & 6 & 2 & 3 & 5 & 12 & 5 & 8 & 4 & 8 10 & 3 & 4 & 12 & 2 & 8 & 15 & 1 & 17 & 6 3 & 2 & 8 & 5 & 9 & 6 & 8 & 7 & 14 & 12 \end{matrix}

Make a grouped frequency distribution table for this data, taking class width 5 and one of the class intervals as 5- 10.

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Thirty children were asked about the number of hours they watched TV programmes in the previous week. The results were found as follows: 1623512584810341228151176328596871412 (i) Make a grouped frequency distribution table for this data, taking class width 5 and one of the class intervals as 5- 10.

(i) Our class intervals will be 0−5, 5− 10,10 −15….. The grouped frequency distribution table can be constructed as follows. HoursNumber of children0−5105−101310−15515−202Total30

(i) Our class intervals will be 0−5, 5− 10,10 −15…..
The grouped frequency distribution table can be constructed as follows.
$\begin{matrix} H o u r s & N u m b e r o f c h i l d r e n 0 - 5 & 10 5 - 10 & 13 10 - 15 & 5 15 - 20 & 2 T o t a l & 30 \end{matrix}$