Question

If the mode of the data 15, 18, 14, 15, 15, 18, 14, 17, 18 and k is 15, then find the value of k.

Answer 1

mode is the most frequently occurred number
above if k is neglected the mode becomes 15 and 18 but they given that the mode is 15 only the happens only if k also becomes 15

so k=15

Answer 2

K = 15

As the mode of data set = Most frequently occurring number  

No. of 15 = 3

No. of 18 = 3

No. of 14 = 2

No. of 17 =  1

In order for mode to be 15, K should be 15.

such that,

No. of 15 = 4