Question

(a) Following is the record of marks obtained by 75 students in an
examination. Form a frequency distribution on exclusive basis:
84,9,58,44,87,58,43,40,73,43,56,55,40,91,35, 18,59,27,
92,13,45,61,39,78,23,11,71,62,22,41,63,47,39,19,22,35,30,80,37,80,52,73,65,50,
43,40,27,84,53,19,35,72,44,19,51,67,58,76,38,16,37,74,45,50,53,70,36,33,63,67,
85,45,55,41,49
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Answer 1

Answer:

Your answer is here.

Step-by-step explanation:

Make a table having three columns.

In First column write = Marks

In Second column write = Tally Mark

In Third column write = Frequency

After that

1 st step :

Write the data ( marks obtained by 75 students ) in first column Marks

2 nd step :

count how many times a number repeated in data and the number repeated times is your frequency so write the number of times repeated in Third column Frequency

3 rd step :

Express the Frequency as Tally Mark

How to express Frequency as Tally Mark :

If the frequency is 1 Tally Mark = l

if the frequency is 2 Tally mark = ll

if the frequency is 3 Tally mark = lll

if the frequency is 4 Tally mark = llll

if the frequency is 5 Tally mark = llll and 1 / mark

if the frequency is more than 5 repeat the technique

If the frequency is 6 Tally mark = Tally mark of 5 + Tally mark of 1

if the frequency is 7 Tally mark = Tally mark of 5 + Tally mark of 2

and so on

You can make it yourself with the help of information i provided.

I hope this will help you.