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Grouped Frequency Table

The marks obt...

Question

The marks obtained by 36 students in a test in statistics (out of 50) are as below.
$\begin{matrix} 3 & 5 & 1 & 15 & 35 & 45 & 23 & 31 & 40 & 21 & 13 & 15 20 & 47 & 48 & 42 & 34 & 43 & 45 & 33 & 37 & 11 & 13 & 27 18 & 12 & 37 & 39 & 38 & 16 & 13 & 18 & 5 & 41 & 47 & 43 \end{matrix}$
Construct a frequency distribution table with equal class intervals, one of them being 10-20(20 is not included).

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Solution

Frequency distribution table with equal class intervals are given below :
$\begin{matrix} Marks & Frequency 0 - 10 & 4 10 - 20 & 10 20 - 30 & 4 30 - 40 & 8 40 - 50 & 10 \end{matrix}$

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Q. The marks obtained by 36 students in a test in statistics (out of 50) are as below.

\begin{matrix} 3 & 5 & 1 & 15 & 35 & 45 & 23 & 31 & 40 & 21 & 13 & 15 20 & 47 & 48 & 42 & 34 & 43 & 45 & 33 & 37 & 11 & 13 & 27 18 & 12 & 37 & 39 & 38 & 16 & 13 & 18 & 5 & 41 & 47 & 43 \end{matrix}

Construct a frequency distribution table with equal class intervals, one of them being 10-20(20 is not included).

Q. The marks obtained by

36

students in a test in statistics (out of

50

) are as below.

3511535452331402113152047484234434533371113271812373938161318

5414743

Construct a frequency distribution table with equal class intervals, one of them being

10 - 20

20

is not included)

Q. The marks obtained by 40 students of a class in an examination are given below:
8, 47, 22, 31, 17, 13, 38, 26, 3, 34, 29, 11, 22, 7, 15, 24, 38, 31, 21, 35, 42, 24, 45, 23, 21, 27, 29, 49, 25, 48, 21, 15, 18, 27, 19, 45, 14, 34, 37, 34.
Prepare a frequency distribution table with equal class intervals, starting from 0−10 (where 10 not included).

Q. The marks obtained (out of 20) by 30 students of a class in a test are given below:
7, 10, 8, 16, 13, 14, 15, 11, 18, 11, 15, 10, 7, 14, 20, 19, 15, 16, 14, 20, 10, 11, 14, 17, 13, 12, 15, 14, 16, 17.
Prepare a frequency distribution table for the above data using class intervals of equal width in which one class interval in 3–8 (including 2 and excluding 8). From the frequency distribution table so obtained, draw a histogram.

Q. The marks of

30

students of a class, obtained in a test (out of

75

), are given below:

42, 21, 50, 37, 42, 37, 38, 42, 49, 52, 38, 53, 57, 47, 29

59, 61, 33, 17, 17, 39, 44, 42, 39, 14, 7, 27, 19, 54, 51

.
Form a frequency table with equal class intervals.

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