Reading data and descriptive statistics
bar charts, reading data from lists, what percentage of the whole and the whole from a percentage, pie charts (sector angle, reading), graphs, arithmetic mean
Exercises are drawn at random from a large bank - every click gives a different set.
Solved: 0 of 10
Problem
Results of a survey about favourite sports: football: 35% volleyball: 15% basketball: 30% swimming: 20% What angle will the sector for the answer "football" have if the results are shown on a pie chart?
Problem
At a school, 25 students make up 25% of all the students. How many students attend the school?
Problem
In a class of 20 pupils the marks from a test were as follows: mark 2: 7 pupils mark 3: 3 pupils mark 4: 5 pupils mark 5: 5 pupils Work out the mean mark.
Problem
A group has 20 people, 19 of whom are girls. What percentage of the group are girls?
Problem
Marks from a test: mark 2: 1 pupil mark 3: 4 pupils mark 4: 3 pupils mark 5: 8 pupils How many pupils got a mark higher than 3?
Problem
Ola's maths marks this term are 3, 2, 5 and 5. What mark does she need in the next test for the mean of all her marks to be 3.8?
Problem
Five pupils ran 60 m. Their times were: 10.1 s, 11.3 s, 9.4 s, 8.2 s, 9.9 s. Find the mean time of these pupils.
Read the bar chart
Seventh-grade pupils were asked about their favourite subject. Each of them chose one answer. The bar chart shows the results of the survey. What percentage of the pupils surveyed chose "chemistry"?
Read the line graph
The line graph shows the air temperature measured in a town every 3 hours during one day. At what time was the temperature highest?
Read the graph
The graph shows the distance a cyclist rode against the time of the ride. The cyclist made one stop during the trip. At what speed did the cyclist ride before the stop?
This address is one particular set - everyone who opens it gets exactly the same exercises. Copy the link from the address bar and send it to the class. You can generate a new set at the top of the page.
PhiBoard is a free online whiteboard for maths
These exercises are part of it. On the board itself you can plot a function, write a formula in LaTeX, or solve a problem together with a teacher or a friend - live, in the browser. Our app is completely free.