Statistics and Probability: More Practice
Mean, median and range, and the difference between independent and dependent events.
8 questions, free, marked as you go with a worked explanation on every one.
What this covers
- probability basics
The questions
- Find the mean of 10, 15, 20, 25, 30.
- Find the median of 2, 8, 4, 10, 6.
- Two events are independent if:
- A bag has 5 red and 3 blue marbles. One marble is drawn, replaced, then a second is drawn. What is the probability both are red, as a percent, to the nearest whole number?
- Use the table below, showing the number of rainy days recorded each month. Which month had the most rainy days?
- A jar has 4 green and 6 yellow candies. One candy is drawn and not replaced, then a second is drawn. What is the probability both are green, as a percent, to the nearest whole number?
- Which situation describes dependent events?
- Find the range of 45, 12, 38, 27, 19.