Grade 8 Data Clusters Worksheet
Explore data clusters, outliers, and patterns in scatter plots and other data representations.
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Grade 8 Data Clusters Worksheet
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Read each question carefully and answer to the best of your ability. Show all your work where applicable.
1. What is a 'cluster' in a scatter plot?
A single point far away from others.
A group of data points that are close together.
The line of best fit for the data.
The average of all data points.
2. Which of the following best describes an outlier in a data set?
A data point that is very similar to others.
A data point that falls outside the general pattern.
The central value of the data set.
A data point that indicates a positive correlation.
3. A is a graph that displays the relationship between two sets of data.
4. When data points on a scatter plot are grouped closely together, they form a .
5. An unusual data point that doesn't fit the overall pattern of the data is called an .
6. Observe the scatter plot below. Identify any clusters and outliers. Describe what they might represent in a real-world scenario (e.g., student test scores vs. study hours).
7. All scatter plots will clearly show distinct clusters.
True
False
8. Outliers should always be removed from a data set before analysis.
True
False
9. A researcher collected data on the number of hours students spent studying for a math test and their corresponding scores. The scatter plot showed a strong positive correlation with one cluster of high scores for students who studied many hours, and another cluster of lower scores for students who studied fewer hours. There was also one student who studied very little but still got a high score. How would you classify this student's data point and what could be a possible explanation?