A shopkeeper in Surat groups the number of items sold per day over 90 days: 0-10 - 8, 10-20 - 16, 20-30 - 22, 30-40 - 20, 40-50 - 14, 50-60 - 10. Find the median number of items sold.

Question

A shopkeeper in Surat groups the number of items sold per day over 90 days: 0-10 -> 8, 10-20 -> 16, 20-30 -> 22, 30-40 -> 20, 40-50 -> 14, 50-60 -> 10. Find the median number of items sold.

Accepted Answer

29.55. n = 90, n/2 = 45. Cumulative: 8, 24, 46, 66, 80, 90. cf just above 45 is 46, so median class is 20-30, l = 20, cf = 24, f = 22, h = 10. Median = 20 + 45 - 24/22 × 10 = 20 + 21/22 × 10 = 20 + 9.545 = 29.55 (approx).

A shopkeeper in Surat groups the number of items sold per day over 90 days:
0-10 -> 8, 10-20 -> 16, 20-30 -> 22, 30-40 -> 20, 40-50 -> 14, 50-60 -> 10.
Find the median number of items sold.

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More Class 10 Median of Grouped Data practice

A shopkeeper in Surat groups the number of items sold per day over 90 days:0-10 -> 8, 10-20 -> 16, 20-30 -> 22, 30-40 -> 20, 40-50 -> 14, 50-60 -> 10.Find the median number of items sold.

Step-by-Step Solution

Master this chapter in 30 minutes a day.

More Class 10 Median of Grouped Data practice

A shopkeeper in Surat groups the number of items sold per day over 90 days:
0-10 -> 8, 10-20 -> 16, 20-30 -> 22, 30-40 -> 20, 40-50 -> 14, 50-60 -> 10.
Find the median number of items sold.