Body Temperatures Listed below are the temperatures from nine ...

Question

Body Temperatures Listed below are the temperatures from nine males measured at 8 AM and again at 12 AM (from Data Set 5 “Body Temperatures” in Appendix B). Construct a scatterplot. Based on the graph, does there appear to be a relationship between 8 AM temperatures and 12 AM temperatures?

Table displaying body temperatures of nine males measured at 8 AM and 12 AM, with values ranging from 96.6 to 98.8 degrees.

Accepted Answer

Hello everyone. Let's take a look at this question together. The table below shows the resting heart rates in beats per minute of 9 individuals measured in the morning and again in the evening. Construct a scatter plot. Based on the graph, does there appear to be a relationship between heart rates measured in the morning and those recorded in the evening? And here we have our table of the heart rates in the morning and in the evening for all 9 individuals. Is it answered choice A, yes, there is a strong positive correlation between morning and evening heart rates. Answer choice B. No, there is no apparent relationship between morning and evening heart rates. Answer choice C, the data points are scattered randomly, indicating no correlation between morning and evening heart rates, or answer choice D, it cannot be decided without hypothesis testing. So using the provided data of the morning heart rates and the evening heart rates to construct a scatter plot, the morning heart rates represent the X variable. And the evening heart rates represent the Y variable. Therefore, the X-axis represents the morning heart rates, and the Y axis represents the evening heart rates. And so plotting our data on a scatter plot gives us the following scatter plot of morning versus evening heart rates, and some observations that we can make from looking at our scatter plot include that the points generally follow an up. trend, which the upward trend indicates a positive correlation between the morning and evening heart rates. Therefore, as the morning heart rate increases, the evening heart rate also tends to increase, and the data points are fairly close to a straight-line pattern, which suggests a strong linear relationship between the two variables. And so from those observations, we can identify that the correct answer choice is answer choice A, as there is a strong positive correlation between the morning and evening heart rates based on the scatter plot, as individuals with a higher morning heart rate tend to have a higher evening heart rate as well. So, answer choice A is correct, and all other answer choices are incorrect. I hope you found this video to be helpful. Thank you and goodbye.