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Diagram

For the following data of marks of 7 students in physics (x) and Mathematics (y), draw scatter diagram and state the type of correlation.

x |
8 | 6 | 2 | 4 | 7 | 8 | 9 |

y |
6 | 5 | 1 | 4 | 4 | 7 | 8 |

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#### Solution

We take marks in Physics on X-axis and marks in Mathematics on Y-axis and plot the points as below.

We get a band of points rising from left to right. This indicates the positive correlation between marks in Physics and marks in Mathematics.

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