Question

The mid-value of a class interval is 42. If the class size is 10, then the upper and lower limits of the class are

• A. 37 and 47
• B. 47 and 37
• C. 37.5 and 47.5
• D. 47.5 and 37.5

Answer 1

Answer: (B)

Mid value = 42 and class size = 10

$\therefore$ Upper limits = 42 + $\frac{10}{2}$ = 42 + 5 = 47

and lower limit = 42 $-\frac{10}{2}$ = 42 - 5 = 37

Upper class limit and lower class limits are 47 and 37