Interpreting graphs
What kind of graph uses bars to show frequencies?
Bar graph or histogram if continuous
What is a tally?
A mark used to count frequencies.
What is the middle value in a data set called?
Median
In a line graph of temperature over time, what does an upward slope mean?
The temperature is increasing
The ages of 10 students are 11, 12, 13, 14, 15, 12, 13, 14, 12, 11. Find the mode.
12
A data set: 10, 12, 12, 14, 15, 15, 15, 20. What is the range?
10
A bar chart shows students’ favourite sports: Soccer (12), Basketball (9), Cricket (6), Netball (3). What fraction chose Soccer?
12/30
What’s the mode of this data set: 2, 4, 4, 6, 7, 7, 7, 8?
7
Find the mean of 5, 7, 8, 4, 6.
6
A line graph shows rainfall per month. If the line drops sharply in June, what does this mean?
Rainfall decreased suddenly in June.
A tally chart shows 3 cats, 6 dogs, and 5 birds. How many pets in total?
14
A student scored 10, 12, 15, 13, and 20 on tests. What is the median score?
13
A bar chart shows the number of students choosing subjects:
Maths: 24
Science: 18
History: 12
Art: 6
If the total number of students is 60, what percentage chose Science?
30%
How many people were surveyed?
Apples: |||
Bananas: ||||
Oranges: ||
9
The mean of 4 numbers is 9. If 3 numbers are 8, 10, and 11, what is the missing number?
7