Question

Find the mean for the following distribution table
X=4,6,8,10,12
T=12,10,9,8,5

Answer 1

Mean is the middle value of the data when we arrange it in ascending or descending order.

Mean of X is 8

Mean of Y is 9

Answer 2

The mean for the following distribution table is 7.27

Solution:

X = 4, 6, 8, 10, 12

T = 12, 10, 9, 8, 5

Find the mean:

Mean = Sum of all the observations / Total number of observations

$Mean = \frac{ 4 \times 12 + 6 \times 10 + 8 \times 9 + 10 \times 8 + 12 \times 5 }{12+10+9+8+5}\\\\Mean = \frac{48 + 60 +72+80+60 }{44}\\\\Mean = \frac{320}{44}\\\\Mean = 7.27$

Thus, mean is 7.27

Learn more:

Calculate the mean value of the following distribution:

x: 5  6  7  8  9

f:  4  8  14  11  3

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Find the mean of the following distribution class interval 0 - 6 - 12 12 - 18 18 - 24 24 - 30 frequency 54164 ​

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