Question: You will need your text (for tables) and SPSS. Save this test as a Word or rtf document and then respond right into the test, including any copying any SPSS output into the document. When you have finished the test, attach your results to an email and send it to me with subject line Module 7 yourname.

You wish to be able to predict a swimmer’s 50 m butterfly time from her 100 m butterfly time. Here are the 50 m and 100 m fly times for 20 competitive female swimmers.

100 m Fly 50 m Fly

57.27 27.01
55.52 27.96
53.46 26.53
55.92 27.00
56.67 27.21
54.77 26.68
57.33 29.01
56.35 27.77
52.82 24.17
57.09 27.48
56.92 25.29
56.14 27.51
57.71 29.00
55.96 27.76
55.60 25.82
54.65 24.78
55.82 26.84
58.19 28.83
54.36 25.52
55.02 26.95

o Have SPSS make a scatter plot of this data, with the regression line and bounding lines superimposed. Include the plot in your response.

o Ask SPSS to find the correlation between the times.

o Describe and test the hypothesis of meaningful prediction, considering both slope and correlation. Include any appropriate SPSS output in your response.

o Predict the 50 m fly times for three competitive female swimmers with 100 m fly times of 56.9, 57.4, and 61.6 respectively.

o Predict the 50 m fly time for a male swimmer with a 100 m fly time of 51.1.

o Discuss the amount of credibility you place in these predictions.