Scatter Graphs: Correlation & Line of Best Fit (Year 8)
Free printable UK Year 8 (Key Stage 3) maths worksheet: describe correlation and use a line of best fit to estimate values.
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Grade 7 · Math worksheet
Name
Date
Math
Scatter Graphs: Correlation & Line of Best Fit
Describe the correlation shown by each scatter graph, and use the line of best fit to estimate values where asked.
- 1.A scatter graph plots these (x, y) pairs: (1, 5), (2, 6), (3, 7), (4, 8), (5, 9), (6, 10). (a) Describe the correlation. (b) Using the line of best fit, estimate y when x = 7.
- 2.A scatter graph plots these (x, y) pairs: (1, 7), (2, 6), (3, 5), (4, 4), (5, 3), (6, 2). (a) Describe the correlation. (b) Using the line of best fit, estimate y when x = 7.
- 3.A scatter graph plots these (x, y) pairs: (1, 3), (2, 4), (3, 5), (4, 6), (5, 7), (6, 8). (a) Describe the correlation. (b) Using the line of best fit, estimate y when x = 7.
- 4.A scatter graph plots these (x, y) pairs: (1, 8), (2, 10), (3, 12), (4, 14), (5, 16), (6, 18). (a) Describe the correlation. (b) Using the line of best fit, estimate y when x = 8.
- 5.A scatter graph plots these (x, y) pairs: (1, 6), (2, 3), (3, 0), (4, -3), (5, -6), (6, -9). (a) Describe the correlation. (b) Using the line of best fit, estimate y when x = 7.
- 6.A scatter graph plots these (x, y) pairs: (1, 2), (2, 6), (3, 4), (4, 4), (5, 6), (6, 2). Describe the correlation.
- 7.A scatter graph plots these (x, y) pairs: (1, 7), (2, 15), (3, 11), (4, 11), (5, 15), (6, 7). Describe the correlation.
- 8.A scatter graph plots these (x, y) pairs: (1, 12), (2, 18), (3, 15), (4, 15), (5, 18), (6, 12). Describe the correlation.
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