Question

5) The marks obtained by a group of students in a science test are 85,76,90,85.39.48.56.
95. 81 and 75. Find the
i) Highest and the lowest marks obtained by the students.
ii) Range of the marks obtained.
iii) Mean marks obtained by the group.
following:​

Answer 1

Answer:

☆Given :- The marks obtained by students = 85,76,90,85,39,48,56,95,81 and 75

☞ Highest and lowest marks obtained by the students

• Highest marks =95
• Lowest marks = 39

☞ Range of the marks obtained =

Maximum marks - Minimum marks

=95-39= 56

☞ Mean marks obtained by the group

Sum of observations

Number of observations

{Number of observations are 10}

= 85+76+90+85+39+48+56+95+81+75

10

= 730

10

= 73

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