Question

the marks obtained by 15 children in the Mathematics Exam are given here 68,49,91,45,62,78,100,90,93,89,36,97,99,42,57. find the range of data
plz help fast​

Answer 1

Answer:

Solution:

1) Mean = sum of all observation/ Total number of observation

Total Students = 15

Value of observation= 68,49,91,45,62,78,100,90,93,89,36,97,99,42,57

Mean =

\begin{gathered} \frac{68+49+91+45+62+78+100+90+93+89+36+97+99+42+57}{15} \\ \\ = \frac{1894}{15} \\ \\ = 126.26\end{gathered}

15

68+49+91+45+62+78+100+90+93+89+36+97+99+42+57

=

15

1894

=126.26

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