Question

3 The marks (out of 100) obtained by a group of
students in a Science test are 85, 76, 90, 85, 39, 48,
56, 95, 81 and 75. Find the :
(a) Highest and lowest marks obtained by students.
(b) Mean marks obtained.
(c) Number of students securing marks more than
the mean marks.
od in mand​

Answer 1

Answer:

a) highest : 95, lowest : 39

b) 73

c) 7 people

Step-by-step explanation:

a) 95 is the highest number therefore the highest marks secured and 39 the lowest unit therefore the least marks

b) mean or average is all the numbers added and divided by the number of data values. therefore adding 85+76......+75 is 730 divided by number of data values which is ten (10 students gave the test.) therefore 730 divided by 10 is 73

c) 7 students (85,76,90,85,95,81,75) secured marks above mean marks(73)