The following is the distribution of weights (in kg) of 52 persons: Weight in kg Persons 30-40 10 40-50 15 50-60 17 60-70 6 70-80 4 (i) What is the lower limit of class 50-60?(ii) Find the class marks of the classes 40-50, 50-60.(iii) What is the class size?

The Following is the Distribution of Weights (In Kg) of 52 Persons: - Mathematics

The following is the distribution of weights (in kg) of 52 persons:

(i) What is the lower limit of class 50-60?
(ii) Find the class marks of the classes 40-50, 50-60.
(iii) What is the class size?

(i) The lower limit of the class 50\[-\]60 is 50.

(ii) Class mark for the class 40\[-\]50:

\[\frac{40 + 50}{2}\]
\[ = \frac{90}{2}\]
\[ = 45\]

Again, class mark for the class 50 \[-\] 60:

\[\frac{50 + 60}{2}\]
\[ = \frac{110}{2}\]
\[ = 55\]

(iii) Here the class size is 40\[-\] 30, i.e. 10.

Is there an error in this question or solution?

Chapter 23 Data Handling-I (Classification and Tabulation of Data)
Exercise 23.2 | Q 3 | Page 14