Apps. and Interpretation for IBDP Maths Ebook 1 | Page 231

Exercise 65
1. The number of snowy days in a town in 2019 are as follows:
8 9 14 18 2 5 1 0 0 10 6 11
(a) Find the mean of the data.
(b) Write down the median of the data.
(c) Find the inter-quartile range of the data.
(d) Write down the standard deviation of the data.
2. The number of nouns in each sentence of a newspaper passage are as follows:
3 8 6 10 2 7 7 9
[2]
[1]
[2]
[1]
17
(a)
(b)
Find the mean of the data.
Write down the value of
[2]
(i)
(ii)
(iii)
(iv)
median;
upper quartile;
lower quartile;
inter-quartile range.
[4]
3. Consider the following data set of ten numbers:
7 6 12 3 6 8 11 5 4 x
The mean of the data set is 7.
(a) Find the value of x .
(b) Write down the mode(s) of the data set.
(c) Find the inter-quartile range of the data set.
[2]
[2]
[2]
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