Maths: The corruption Perceptions Index uses a scale of zero (highly
corrupt) to 100(very clean) is given below
COUNTRY SCORE IN
2019
RANK IN
2019
CHANGE IN RANK FROM
2018
Denmark 87 1 0
New Zealand 87 1 1
U.K. 77 12 -1
U.S. 69 23 -1
India 41 80 -2
China 41 80 7
Brazil 35 106 -1
Pakistan 32 120 -3
Russia 28 137 1
Bangladesh 26 146 3
Somalia 9 180 0
a) Represent the change in rank from 2018 on a neatly labelled number
line.
b) Find the mean score in 2019.
Answers
Answer:
MCQ on Statistics Class 10 Question 1. One of the methods for determining mode is
(a) Mode = 2 Median -3 Mean
(b) Mode = 3 Median – 2 Mean
(c) Mode = 2 Mean – 3 Median
(d) Mode = 3 Mean – 2 Median
Answer
2. Mode is the
(a) middle most frequent value
(b) least frequent value
(c) maximum frequent value
(d) none of these
Answer
3. The algebraic sum of the deviations of a frequency distribution from its mean is always,
(a) greater than zero
(b) less than zero
(c) zero
(d) a non-zero number
Answer
MCQ Questions for Class 10 Maths Statistics Question 4. While computing mean of grouped data, we assume that the frequencies are
(a) centred at the upper limits of the classes
(b) centred at the lower limits of the classes
(c) centred at the classmarks of the classes
(d) evenly distributed over all the classes
5. Construction of a cumulative frequency table is useful in determining the
(a) mean
(b) median
(c) mode
Answer:
b) find the mean score in 2019