Question

5. Calculate Q1, D6, and P15 for the following
data:
Mid value
25
75
125
175
225
275
Frequency
10
70
80
100
150
90
​

Answer 1

=50+(28-16)/(2(28)-16-15)xx10

=50+(12)/(56-31)xx10

=50+(12)/(25)xx10

=50+4.8=54.8

Mode (Z) =54.8.