If the mean of a frequency distribution is 8.1 and `sumf_i x_i=132+5k ,\ \ sumf_i=20` , then `k=` (a) 3 (b) 4 (c) 5 (d) 6

If the mean of a frequency distribution is 8.1 and sumf_ix_i =132 + 5 K, sumf_i = 20 then K =

If the mean of a frequency distribution is 8.1 sumf_ix_i= 133+5k and sumf_i = 30 , find the value of k.

In a frequency distribution, mean is 8.1, sum f_ix_i = 132+5k and sumf_i = 20 . Find the value of k.

Mean of a freqency distribution is 54, sumf_ix_i = 2200+5k and sumf_i = 40+k . Find the value of k.

The mean of a frequency distribution is 8.1, if fixi = 132 + 5K and fi = 20 then what is the value of K?

For a given frequency distribution, n = 20 and sumf_i x_i = 140, then barx = ..........

The arithmitic mean of a frequency distraction is 8. If Sigma f_i x_i = 130 +5k and Sigma f_i = 20 , then find the value of k.

If u_i=(x_i-25)/(10),sumf_i u_i=20 ,sumf_i=100 , then x = 23 (b) 24 (c) 27 (d) 25

If mu is the mean of a distribution , then sumf_i(y_i-mu) is equal to

Write True or False If the mean of frequency distribution is 10 sumf_iu_i= 200 then total frequeny is 20.