Grade 9 Math: Data Clusters Worksheet

Grade 9 Math: Data Clusters

Read each question carefully and answer to the best of your ability. Show all your work where applicable.

1. What is a data cluster in a data set? Explain its significance in data analysis.

2. Consider the following data set: 10, 12, 11, 13, 50, 10, 12. Which number is most likely an outlier?

3. A data point that is significantly different from other data points in a set is called an  .

4. When data is concentrated in a particular region, it forms a  .

5. Describe what it means for a data distribution to be 'skewed right' and 'skewed left'.

6. Plot the following data points on the number line provided: 5, 7, 8, 8, 9, 10, 12, 15

7. A teacher recorded the test scores of her students: 65, 70, 72, 75, 78, 80, 81, 82, 85, 90, 92, 95, 98, 100. Identify any clusters and outliers in this data set. What conclusions can you draw about the students' performance?