📄 8th Grade Math (Algebra I): Scatter Plot Worksheet
📌 1. True / False
1. A scatter plot shows the relationship between two sets of data.
2. A positive correlation means that as one variable increases, the other variable tends to decrease.
3. An outlier is a data point that is far away from the other data points in a scatter plot.
4. A line of best fit must pass through every data point on a scatter plot.
5. If there is no correlation, the points on a scatter plot will appear randomly scattered.
✏️ 2. Fill in the Blanks
🔗 3. Matching
✍️ 4. Short Answer Questions
1. What is the primary purpose of creating a scatter plot?
2. Describe a real-world scenario that would likely show a negative correlation on a scatter plot.
🎯 5. Multiple Choice
1. Which type of correlation is suggested by the relationship between the number of hours a student studies for an exam and their score on that exam?
2. A scatter plot shows data points that are widely spread out with no clear pattern. What type of correlation does this indicate?
3. In a scatter plot showing the relationship between ice cream sales and temperature, what would you expect to see?
📝 6. Open-Ended Questions
1. A researcher collected data on the number of hours students spent watching TV per week and their average test scores. Describe how you would create a scatter plot for this data and what type of correlation you might expect to see.
2. Consider the following data for the number of hours spent exercising per week and a person's resting heart rate (beats per minute):
* Student A: 3 hours, 75 bpm
* Student B: 5 hours, 70 bpm
* Student C: 1 hour, 82 bpm
* Student D: 7 hours, 65 bpm
* Student E: 4 hours, 72 bpm
Describe the correlation you would expect to see if you plotted this data on a scatter plot. Justify your answer.
3. Explain what an 'outlier' is in the context of a scatter plot and provide an example of how one might occur.
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Name Surname: .................................. Date: .... / .... / 202...
Scatter Plot Worksheet
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SCORE
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A. True (T) / False (F)
| ( .... ) | A scatter plot shows the relationship between two sets of data. |
| ( .... ) | A positive correlation means that as one variable increases, the other variable tends to decrease. |
| ( .... ) | An outlier is a data point that is far away from the other data points in a scatter plot. |
| ( .... ) | A line of best fit must pass through every data point on a scatter plot. |
| ( .... ) | If there is no correlation, the points on a scatter plot will appear randomly scattered. |
B. Fill in the Blanks
| 1) | A scatter plot is a graph that shows the relationship between two sets of .................... data. |
| 2) | When both variables in a scatter plot tend to increase together, it indicates a .................... correlation. |
| 3) | The variable that changes in response to another variable is called the .................... variable. |
| 4) | A data point that significantly deviates from the general pattern of other data points is known as an ..................... |
| 5) | A .................... of best fit can be drawn on a scatter plot to summarize the trend of the data. |
C. Matching Concepts
| ( .... ) | As one variable increases, the other variable also tends to increase. | - Outlier |
| ( .... ) | As one variable increases, the other variable tends to decrease. | - Negative Correlation |
| ( .... ) | There is no apparent relationship between the two variables. | - Line of Best Fit |
| ( .... ) | A data point that lies an abnormal distance from other values in a random sample. | - Positive Correlation |
| ( .... ) | A straight line that best represents the data on a scatter plot, used for prediction. | - No Correlation |
D. Short Answer Questions
| 1) | What is the primary purpose of creating a scatter plot? |
| 2) | Describe a real-world scenario that would likely show a negative correlation on a scatter plot. |
E. Multiple Choice Questions
| 1) |
Which type of correlation is suggested by the relationship between the number of hours a student studies for an exam and their score on that exam?
A) Negative Correlation
B) Positive Correlation
C) No Correlation
D) Inverse Correlation
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| 2) |
A scatter plot shows data points that are widely spread out with no clear pattern. What type of correlation does this indicate?
A) Strong Positive
B) Weak Negative
C) No Correlation
D) Perfect Correlation
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| 3) |
In a scatter plot showing the relationship between ice cream sales and temperature, what would you expect to see?
A) Negative correlation, as ice cream sales decrease when temperature rises.
B) Positive correlation, as ice cream sales increase when temperature rises.
C) No correlation, as temperature has no effect on ice cream sales.
D) A constant relationship, where sales remain the same regardless of temperature.
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F. Open-Ended Questions
| 1) | A researcher collected data on the number of hours students spent watching TV per week and their average test scores. Describe how you would create a scatter plot for this data and what type of correlation you might expect to see. |
| 2) |
Consider the following data for the number of hours spent exercising per week and a person's resting heart rate (beats per minute): * Student A: 3 hours, 75 bpm * Student B: 5 hours, 70 bpm * Student C: 1 hour, 82 bpm * Student D: 7 hours, 65 bpm * Student E: 4 hours, 72 bpm Describe the correlation you would expect to see if you plotted this data on a scatter plot. Justify your answer. |
| 3) | Explain what an 'outlier' is in the context of a scatter plot and provide an example of how one might occur. |
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