Given, Marks obtained by two students in 10 tests are given in Table.

To Find: Who is more intelligent and who is more consistent?

Explanation: Marks obtained by Ravi

Mean,

SD ()=

SD ()=

SD ()=

SD ()=13.003

Coefficient of variation =

Cv =

For Hashima

Mean,

SD ()=

SD ()=

SD ()=

SD ()=25.16

Coefficient of variation =

Cv =

Since, The coefficient of variation in mark obtained by Hashima is greater than the coefficient of Variation in mark obtained by Ravi,

Hence, Hasima is more consistent and intelligent