Question
13 17 13 17 19 13 31 21 29
(a) For the numbers above, find
(i) the range,
(ii) the median.
(b) Write down the only number in the list which is not a prime number.
Answer/Explanation
(a)(i) 18
(ii)
(b)21
Answer/Explanation
Ans:
(b) Write down the only number in the list which is not a prime number.
Answer/Explanation
Ans: 21
Question
8 15 7 8 7 15 4 13 4 3 10 2 9 4 5
(a) Write down the mode.
(b) Work out the median.
Answer/Explanation
Ans:
(a) 4
(b) 7 nfww
Question
Marco throws a six-sided dice 27 times.
The bar chart shows his results.
(a) Write down the mode.
(b) Work out the probability that Marco throws a number less than 5.
(c) Calculate the mean.
Answer/Explanation
Ans:
(a) 4 cao
(b) \(\frac{21}{27}\) oe isw
(c) 3.33(3…)
Question
Cheryl recorded the midday temperatures in Seoul for one week in January.
(a) Write down the mode.
Answer/Explanation
Ans: -3
(b) On how many days was the temperature lower than the mode?
Answer/Explanation
Ans: 4
Question
These are the heights, correct to the nearest centimetre, of 12 children.
132 114 151 130 132 145 163 142 153 170 132 125
Find the median height.
Answer/Explanation
Ans: 137