Question

Find the mean median and mode. Class interval 1-3,3-5,5-7,7-9,9-11,11-13.frequency 20,45,80,55,40,12​

Answer 1

Step-by-step explanation:

mean = sum of the terms/ no.of terms

= 20+45+80+55+40+12/6

= 252/6

=42

there mean = 42

median = middle value of data which is arranged in assending order

median = 12,20,40,45,55,80

in this middle terms are 2

therefore ,median = 40+45=85

mode = 4×median - 3×mean

mode = 4×85-3×42

= 340-126 = 114

therefore mode = 114