Statistics and Probability
Alberta strand: Statistics and Probability. Covers graphs and describing chance.
12 questions, free, marked as you go with a worked explanation on every one.
What this covers
- chance and averages
- probability basics
The questions
- A pictograph symbol represents 5 students, and there are 4 symbols for 'walks to school'. How many students walk to school?
- If you flip a fair coin, what is the chance of landing on heads?
- Rolling a standard 6-sided die, which outcome is impossible?
- A bag has 3 red and 7 blue marbles. What is the probability (as a percent) of drawing a blue marble?
- A bag has 2 red, 3 blue, and 5 green marbles. Which colour is most likely to be drawn?
- A student scored 85, 90, 75, and 70 on four tests. What is the mean (average) score?
- In a bar chart, Monday: 8 students absent, Tuesday: 5 absent, Wednesday: 3 absent. How many students were absent across all three days?
- A grade 5 class made a double bar graph of how students travel to school, with one bar for Tuesday and one for Thursday in each category. The graph shows that on Tuesday 9 students walked and 6 took the bus, while on Thursday 5 students walked and 11 took the bus. How many more students took the bus on Thursday than on Tuesday?
- A bag has 4 yellow marbles and 6 green marbles. What is the probability of drawing a yellow marble, as a fraction in simplest form? Give the numerator only if the simplest form is written over 5.
- A spinner has 8 equal sections, and 2 of them are blue. What is the probability of landing on blue, as a percent?
- A bag contains only red marbles. What is the probability of pulling out a blue marble?
- A fair six-sided die is rolled once. What is the probability of rolling an even number, as a fraction in simplest form? Give the denominator only.