Question 3 of 7advanced🔧 ApplyNumerical6 marks
If the arithmetic mean of the data given below is 28, find (a) the missing frequency, and (b) the median of the series: Profit per retail shop (in Rs) 0-10 10-20 20-30 30-40 40-50 50-60 Number of retail shops 12 18 27 - 17 6
(a)
find the missing frequency
Answer
The missing frequency is 20.
(b)
find the median of the series
Answer
The median of the series is Rs 27.41.
Explanation
This question tests two concepts: calculating missing frequency using the arithmetic mean formula, and finding median for continuous series using the standard formula. The textbook confirms both answers.