Question

the table shows the time a patient spends at the dentist and the amount of the bill. what is the correlation coefficient for the data in the table? -0.93 -0.27 0.27 0.93

Explanation:

Step1: Analyze the relationship between time and bill amount

As time spent at the dentist increases, the bill amount also increases. This indicates a positive correlation.

Step2: Evaluate the options

• Option -0.93 and -0.27 are negative correlation coefficients, so they can be eliminated.
• Between 0.27 and 0.93, 0.93 represents a stronger positive correlation. Looking at the data, as time increases (e.g., from 0.75 hours to 1.4 hours to 1.6 hours to 2.7 hours), the bill amount also has a relatively strong increasing trend (from $156 to $235 to $215 to $867, with some minor fluctuations likely due to other factors not accounted for in just time - but overall a strong upward trend).

Answer:

0.93