Yoga Day: Mr Tabrez was judge at On the Spot drawing competition on the occasion of Yoga day. Time allotted for competition was of 100 minutes. Study the table given below and answer the questions that follow:-
Q i. Estimate the mean time taken by a student to finish the painting. *
A) 54
B) 63
C) 43
D) 50
Q ii. What will be the upper limit of the modal class ? *
A) 20
B) 40
C) 60
D ) 80
Q iii. The construction of cumulative frequency table is useful in determining the *
A) Mean
B) Median
C) Mode
D) All of the above
Q iv. The sum of lower limits of median class and modal class is *
A) 60
B) 100
C) 80
D) 140
Answers
Answer:
i} c)43
ii} b)40
iii} c) median
iv} c}80
Step-by-step explanation:
mean = 1720/40
=43
upper limit = 40-60 = 13
= 40
The construction of cumulative frequency table is useful in determining the median.
the sum of the lower limit of median and modal class.
lower limit= ∑fi = 40
N=40
lower limit class = 40/2
= 20
20 lies between 40-60 modal class.
so lower limit of modal class is 40
and the modal class is 40 .
sum = 40+40= 80
Answer:
(a) iii) 43 (b) iii) 60 (c) ii) Median (d) iii) 80 (e) iii) 31Read more on Sarthaks.com - https://www.sarthaks.com/971240/a-estimate-the-mean-time-taken-by-a-student-to-finish-the-race-i-54-ii-63-iii-43-iv-50
Step-by-step explanation:
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