Pass Check: Statistics & Data Handling
Know the three averages, when to use each, and how to handle outliers.
Mean
The sum of all values divided by how many values there are.
Median
The middle value when data is arranged in order.
Mode
The value that occurs most often.
Range
The largest value minus the smallest value, a measure of spread.
Quick check
Mixed quiz
1. Find the mean of the data set: 8, 11, 13, 16, 19.
2. Find the interquartile range of the data set: 5, 8, 10, 13, 16.
3. Find the mean of the data set: 10, 13, 15, 18, 21.
4. Find the mean of the data set: 4, 7, 9, 12, 15.
5. Complete the sentence: A bar chart is mainly used to compare ______.
6. Complete the sentence: Positive correlation means ______.
7. Find the interquartile range of the data set: 6, 9, 11, 14, 17.
8. Which chart is best for showing parts of a whole?