Question

Median of the following frequency distribution is 168 ,find the the missing frequency

Class. Frequency
Less than -100. 35
100-150. 60
150-200. ?
200-250. 40
More than-250. 20

Answer 1

Lives in hours of is pieces are = 715, 724, 725, 710, 729, 745, 694, 699, 696, 712, 734, 728, 716, 705, 719

Arrange the above data in ascending order = 694, 696, 699, 705, 710, 712, 715, 716, 719, 721, 725, 728, 729, 734, 745  N = 15 (odd)  Median = (N+12)th terms  = (15+12)th terms = 8th terms = 716