The daily wages in a factory are distributed as follows :

Draw a frequency polygon for this distribution.

The class-mark of class 19 - 30 is:

1. $\dfrac{30 + 19}{2}$

2. $\dfrac{29.5 - 19.5}{2}$

3. $\dfrac{30.5 - 19}{2}$

4. $\dfrac{29.5 - 18.5}{2}$

Statement 1: Let m be the mid-value and x be the upper limit of a class in the continuous frequency distribution, then the lower limit of this class is 2m - x.

Statement 2: For a given class: $\dfrac{\text{lower limit + upper limit}}{2}$ = mid-value of the class

1. Both the statements are true.

2. Both the statements are false.

3. Statement 1 is true, and statement 2 is false.

4. Statement 1 is false, and statement 2 is true.

Assertion (A): 30 children were asked about the number of hours they watched TV program everyday. The results are recorded as under.

Then the number of children who watched TV for 10 or more hours a day is 22.

Reason (R): The assertion is not correct as the required number is 4 + 2 = 6.

1. A is true, but R is false.

2. A is false, but R is true.

3. Both A and R are true, and R is the correct reason for A.

4. Both A and R are true, and R is the incorrect reason for A.