the marks obtained by 10 students In a class are 55, 65,78 ,36,98,90,44,62,70 and 40 a) find the range of marks b)what is the mean of the marks obtained?
Answers
Answered by
4
Answer:
a. 62 and b. 63.8
Step-by-step explanation:
a. to find the range, simply take away the biggest number and the smallest number in the set of numbers
98-36=62
b. to find the mean, add up the given amount of numbers and divide by how many there are.
55+65+78+36+98+90+44+62+70+ 40= 638
638 / 10= 63.8
hope this helped
- L
Answered by
5
a) 62
b) 63.8
Step-by-step explanation:
a) range = highest marks - lowest marks
=98-36 = 62
b) mean = sum of observations/no. of observations
=55+65+78+36+98+90+44+62+70+40/10
=638/10
=63.8
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