Question

Find the mean from the following table. Xi 5 15 25 35 45
Fi 6 4 9. 6. 5

Answer 1

Answer:

25 is the answer

Step-by-step explanation:

formula = sum of products of fi and xi divided by sum of fi

5*6+15*4+25*9+35*6+45*5/6+4+9+6+5=

30+60+225+210+225/30=

750/30=

25

Answer 2

The mean for the given table is 25.

Explanation:

Given table :

Xi     5     15     25    35     45

Fi     6     4        9      6         5

                                             

XiFi 30   60   225   210    225

Here , $\sum f_i=6+ 4 +9+6+5=30$

$\sum x_if_i= 30+ 60 + 225 +210 + 225=750$

Now , Mean = $\dfrac{\sum x_if_i}{\sum f_i}$

$=\dfrac{750}{30} =25$

Hence, the value of mean is 25.

# Learn more :

The arithmetic mean of the following data is 25, find the value of k.

xi:

5

15

25

35

45

fi:

3

k

3

6

2

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