Question

2. The marks obtained by 30 students of class VII in a test out of 10 marks are as follows
4, 5, 3, 3, 4, 0, 5, 2, 7,0, 6, 9, 7, 3, 4, 6, 8, 9, 2, 1, 3, 4, 2, 5, 6, 7, 3, 2, 9,8
Make a frequency distribution table for the above data and answer the following questions
(1) Find the number of students passed, if the passing marks is 4.
(1) How many students failed?
(i) How many students secured more than 8 marks?
(iv) Which marks is occurring more frequently?

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Answer 1

Answer

$\Large\frak{\underline{\underline{Correct \: Question:}}}$

The marks obtained by 30 students of class VII in a test out of 10 marks are as follows:

4, 5, 3, 3, 4, 0, 5, 2, 7,0, 6, 9, 7, 3, 4, 6, 8, 9, 2, 1, 3, 4, 2, 5, 6, 7, 3, 2, 9,8

Make a frequency distribution table for the above data and answer the following questions

(1) Find the number of students passed, if the passing marks is 4.

(11) How many students failed?

in) How many students secured more than 8 marks?

iv) Which marks is occurring more frequently?

$\rule{170}2$

$\Large\frak{\underline{\underline{Your~Answer:}}}$

$\boxed{\begin{tabular}{ c || c} \bf{Marks} & \bf{Tally Marks}\\ \cline{1-2}\sf{0} & \sf{II} \\ \cline{1-2}\sf{1} & \sf{I}\\ \cline{1-2}\sf{2} & \sf{\cancel{IIII}}\\ \cline{1-2}\sf{4} & \sf{IIII}\\ \cline{1-2}\sf{5} & \sf{III}\\ \cline{1-2}\sf{6} & \sf{III}\\ \cline{1-2}\sf{7} & \sf{III}\\ \cline{1-2}\sf{8} & \sf{II}\\ \cline{1-2}\sf{9} & \sf{III}\end{tabular}}$

1) Find the number of students passed, if the passing marks is 4.

✠18 students

2) How many students failed?

✠12 students

3)How many students secured more than 8 marks?

✠3 students

4)Which marks is occurring more frequently?

✠3

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Answer 2

$\huge\underline\mathrm{SOLUTION:-}$

$\boxed{\begin{tabular}{ c || c} \bf{Marks} & \bf{Tally Marks}\\ \cline{1-2}\sf{0} & \sf{II} \\ \cline{1-2}\sf{1} & \sf{I}\\ \cline{1-2}\sf{2} & \sf{\cancel{IIII}}\\ \cline{1-2}\sf{4} & \sf{IIII}\\ \cline{1-2}\sf{5} & \sf{III}\\ \cline{1-2}\sf{6} & \sf{III}\\ \cline{1-2}\sf{7} & \sf{III}\\ \cline{1-2}\sf{8} & \sf{II}\\ \cline{1-2}\sf{9} & \sf{III}\end{tabular}}$

(1) Find the number of students passed, if the passing marks is 4.

• 18 students passed, if the passing marks is 4.

(2) How many students failed?

• 12 students are failed.

(3) How many students secured more than 8 marks?

• 3 students secured more than 8 marks.

(4) Which marks is occurring more frequently?

• 3 marks is occurring more frequently.

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Additional Information:

❂ What are Tally Marks?

• Tally Marks are small vertical lines drawn to represent a data.Tally Marks are made in group of five.

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