Question

Find the first and third quartiles of the data set.
432, 455, 280, 216, 353, 387, 119, 293, 241, 460, 389, 121, 142

Answer 1

do the same that I did before to calculate the first quartile.
And for third quartile use this formula:
3rd quartile = 3(n+1)/2 th term

Answer 2

i did mistake
3rd quartile= 3(n+1)/4 th term

Answer 3

how would i write that as my answer ?

Answer 4

first arrange the data in ascending order,
and find n

Answer 5

how do i do that?

Answer 6

in ascending order,
119,121,142,216,241,280,293,353,387,389,432,455.460

Answer 7

ok an what doi do next

Answer 8

now count the number of data which is n.
in this case n = 13

Answer 9

is that for the 1st an the 3rd