Here is some information about the results sampled for later in the day.

• After 12.30pm but before 1.30pm all five customers sampled waited between 4 and 5 minutes.
• From 1.30pm, the six results showed a strong negative correlation.

Describe the correlation shown by each of these two new sets of data.

This question tests the understanding of what different patterns on a scatter diagram mean in terms of correlation. * **First period (12.30pm - 1.30pm)**: The information states that all customers waited between 4 and 5 minutes. This means the y-values of the data points would be clustered in a narrow horizontal band at the top of the graph. As the x-value (time) increases, the y-value (waiting time) does not systematically increase or decrease; it stays roughly constant. This pattern represents **no correlation** (or very weak correlation). * **Second period (From 1.30pm)**: The question explicitly states that these results showed a **strong negative correlation**. This means that as the time of day got later, the waiting time for customers got shorter. On a graph, the points would trend downwards from left to right.