Question

Following are the marks of 20 students in a science test 4,6,7,5,3,5,4,5,2,6,2,5,1,9,6,5,8,4,6,7. The mean is​

Answer 1

Answer:

Mean of the given data is 5

Step-by-step explanation:

the marks of 20 students in a science test 4,6,7,5,3,5,4,5,2,6,2,5,1,9,6,5,8,4,6,7

Given observations are :4,6,7,5,3,5,4,5,2,6,2,5,1,9,6,5,8,4,6,7

Sum of all observations =

4+6+7+5+3+5+4+5+2+6+2+5+1+9+6+5+8+4+6+7=100

Number of all observations = 20

We know that,

Mean =

Sum of all observations/ No.Of all observations

Mean =100/20

Mean=5

Answer 2

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Q:-Following are the marks of 20 students in a science test 4,6,7,5,3,5,4,5,2,6,2,5,1,9,6,5,8,4,6,7. The mean is

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------>>>>Here is your answer<<<<--------

⟹total no of students =20

therefore ,no of observation is 20

⟹ observation:-4,6,7,5,3,5,4,5,2,6,2,5,1,9,6,5,8,4,6,7

Sum of observation:-4+6+7+5+3+5+4+5+2+6+2+5+1+9+6+5+8+4+6+7=100

$➪mean = \frac{ \: total \: no.of.observation}{ no \: of \: observation \: }$

$➪ \frac{100}{20} = 5✓$

Therefore,mean is 5

HOPE IT HELPS YOU..

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