Statistics and Probability: More Practice

Mean, median and range, and counting how many belong to at least one of two overlapping groups.

8 questions, free, marked as you go with a worked explanation on every one.

What this covers

• averages
• probability and overlapping groups
• data and graphs
• probability basics

The questions

1. Find the mean of 22, 18, 30, 26, 24.
2. In a class of 30 students, 12 play soccer, 9 play basketball, and 4 play both. How many play at least one of the two sports?
3. Find the median of 14, 9, 21, 17, 11.
4. Use the table below, showing how many of the 40 surveyed students chose each favourite subject. What percent chose Math?
5. A six-sided die and a coin are flipped together. How many total outcomes are possible?
6. Two events overlap if:
7. Find the range of 55, 22, 41, 38, 29.
8. In a survey of 50 people, 18 like tea, 22 like coffee, and 6 like both. How many like neither?

Answer these free