Look at this series of numbers: 25, 21, 12, 14, 8, 19, 17, 12.
What is the mean?
16
32
128
What is the mode?
12
14
21
What is the median?
15
15.5
Five pupils in a class were weighed and their weights were 47kg, 51kg, 46kg, 50kg, and 48kg. Find the mean weight of the pupils.
48.4kg
60.5kg
242kg
The heights in cm of seven children were 151, 160, 148, 143, 127, 159 and 133. What is the median height?
143cm
148cm
151cm
Find the range of the following list of numbers:
12, 12, 10, 2, 30, 15, 22, 25, 8, 6, 12
23
28
24
28.9, 24.9, 26.9, 27.7, 32.9, 46.9, 27.7
1.2
20
22
The total cost of a holiday was £420. A pie chart showed how the cost was made up: food (180°), hotel (90°), travel (60°), other items (30°). How much was spent on travel?
£70
£252
£105
A pop singer's budget over a three month period was as follows: recording latest single (£6000), pressing record and producing sleeve (£3000), poster campaign (£5000), living expenses (£2000), wardrobe (£2000).
What angle in a pie chart would represent the poster campaign?
40°
100°
120°
There are 20 counters in a box. Nine are yellow, 4 are black and 7 are green.
What is the probability that a counter which is taken from the box without looking will be green?
\[\frac{7}{{20}}\]
\[\frac{9}{{20}}\]
\[\frac{4}{{20}}\]
A bag contains 5 green balls, 2 red balls and 4 yellow balls. One ball is taken out at random. What is the probability that it is a red ball?
\[\frac{1}{{5}}\]
\[\frac{2}{{9}}\]
\[\frac{2}{{11}}\]
Nine counters numbered 1, 2, 3, 4, 5, 6, 7, 8, 9 are placed in a bag. One is taken out at random. What is the probability that it is divisible by 3?
\[\frac{1}{{3}}\]
\[\frac{1}{{9}}\]
This table shows the ages of students in a college class.
Calculate the mean age of the students.
17.5
16.9
17
For the same college class as Question 13. What is the median age of the students?
For the same college class as Question 13. What is the modal age of the students?
19