Question

1.
The mean of the following data is 7.3. Find the missing frequency 'k'.
x 5 6 7 8 9
f 4 6 12 k 8 )​

Answer 1

Answer:

k = 0.1

Step-by-step explanation:

The process is given in the attachment.

Answer 2

The value of k is 10.

Step-by-step explanation:

We are given the following in the question:

x:   5   6   7     8   9

f:   4   6   12    k   8

The mean of the data is 7.3

Formula:

$\text{Mean} = \displaystyle\frac{\sum f_ix_i}{\sum f_i}$

Puting the values, we get,

$7.3 = \dfrac{20 + 36 + 84 + 8k + 72}{30+k}\\\\7.3(30+k) = 212 + 8k\\219 + 7.3k = 212 + 8k\\0.7k = 7\\k=10$

Thus, the value of k is 10.

#Learnmore

Find the missing frequencies in the following frequency distribution if it is known that the mean of the distribution is 1.46​

https://brainly.in/question/8810299