Question

Maths question ----- 2​

Answer 1

Answer ⤵️

2.i) The upper limit of the fourth class interval is 60.

ii) The class marks of all the classes are⤵️

.

. . Class mark = Lower limit +Upper limit/2

Class marks of the first class= Lower limit +Upper limit/2

Class marks of the first class = 45+40/2

Class marks of the first class= 85/2

Class marks of the first class= 42.5

Class mark of the second class= Lower limit +Upper limit/2

Class mark of the second class=50+45/2

Class mark of the second class= 95/2

Class mark of the second class= 47.5

Class mark of the third class=Lower limit +Upper limit/2

Class mark of the third class= 55+50/2

Class mark of the third class=105/2

Class mark of the third class= 52.5

Class mark of the fourth class= Lower limit +Upper limit/2

Class mark of the fourth class= 60+55/2

Class mark of the fourth class= 115/2

Class mark of the fourth class= 57.5

Class mark of the fifth class=Lower limit +Upper limit/2

Class mark of the fifth class= 65+60/2

Class mark of the fifth class= 125/2

Class mark of the fifth class= 62.5

iii) The class size of all the classes are⤵️

.

. . Class size= Lower limit-Upper limit

Class marks of the first class= Lower limit -Upper limit

Upper limit Class marks of the first class = 45-40

Class marks of the first class= 5

Class mark of the second class= Lower limit -Upper limit

Upper limitClass mark of the second class=50-45

5Class mark of the second class= 5

Class mark of the third class=Lower limit -Upper limit

limitClass mark of the third class= 55-50

50Class mark of the third class=5

Class mark of the fourth class= Lower limit -Upper limit

Upper limitClass mark of the fourth class= 60-55

55Class mark of the fourth class= 5

Class mark of the fifth class=Lower limit -Upper limit

Upper limitClass mark of the fifth class= 65-60

60Class mark of the fifth class= 5

iv) Second class has the highest frequency.

Step-by-step explanation:

please mark it Brainliest answer