Mathematics

For the following frequency distribution :

MarksNo. of students
below 107
below 2020
below 3050
below 4060
below 5070

Assertion (A) : The modal class is 40-50.

Reason (R) : The modal class is the class of maximum frequency.

  1. A is true, R is true

  2. A is false, R is false

  3. A is true, R is false

  4. A is false, R is true

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Answer

MarksNo. of students
0-107
10-2020 - 7 = 13
20-3050 - 20 = 30
30-4060 - 50 = 10
40-5070 - 60 = 10

We know that,

The modal class is the class of maximum frequency.

∴ Modal class = 20-30.

∴ A is false, R is true.

Hence, Option 4 is the correct option.

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