`{:("Class Interval",1-5,6-10,11-15,16-20),("Frequency",3,7,6,5):}`
Consider the following statement is respect of the above frequency distribution.
I. The median is contained in the modal class.
II. The distribution is bell-shaped.
Which of the above statement is/are correct?

Consider the following statements in respect of class intervals of grouped frequency distribution: 1. Class intervals need out be mutually exclusive. 2. Class intervals should be exhaustive. 3. Class intervals need not be of equal width. Which of the above statements are correct?

{:("Class Interval",0.10,10-20,20-30,30-40,40-50),("Frequency",5,0,20,5,10):} What is the median of the above frequency distribution?

The age distribution of 40 children is as follows: Consider the following statements in respect of the above frequency distribution: 1. The median of the age distribution is 7 years. 2. 70% of the children are in the age group 6-9 years. 3. The modal age of the children is 8 years. Which of the above statements are correct?

The age distribution of 40 children is as follows: Consider the following statements in respect of the above frequency distribution: 1. The median of the age distribution is 7 years. 2. 70% of the children are in the age group 6-9 years. 3. The modal age of the children is 8 years. Which of the above statements are correct?

{:("Class Interval",0.10,10-20,20-30,30-40,40-50),("Frequency",5,0,20,5,10):} What is the mean of the above frequency distribution?

Consider the following statements : 1. A frequency distribution condenses the data and reveals its important features. 2. A frequency distribution is an equivalent representation of original data. Which of the above statements ia/are correct ?

Consider the following statements in respect of histogram : 1. The histogram is a suitable representation of a frequency distribution of a continuous variable. 2. The area included under the whole histogram is the total frequency. Which of the above statements is/are correct?

Consider the following distribution: The frequency of the class 10 -15 is _________.