CASE C\u2192C AND Q\u2192Q CHECKPOINT - CASE C\u2192C AND Q\u2192Q CHECKPOINT The first three questions refer to the following information The mortality rate

CASE Cu2192C AND Qu2192Q CHECKPOINT - CASE Cu2192C...

This preview shows page 1 - 3 out of 5 pages.

CASE C→C AND Q→Q CHECKPOINT The first three questions refer to the following information:The mortality rate from melanoma (skin cancer) during the 1950s was recorded for each of the 48 contiguous United States, plus Washington D.C. (as reported by Fisher, L.D. and van Belle, G. (1993). Biostatistics: A Methodology for the Health Sciences. John Wiley and Sons, New York, NY, p. 292).The following is the scatterplot of the data:Question 1 of 7In context, the negative relationship (shown in the scatterplot above) means that: The more southern the state, the higher the melanoma death rate.The more northern the state, the higher the melanoma death rate.The more southern the state, the more people died of melanoma.Good job! From the scatterplot we see that the lower the latitude the higher the mortality per 10 million. In other words, the more southern the state, the higher the death rate. Note that since the response variable is the mortality per 10 million, it measures the death rate rather than the number of deaths. Question 2 of 7Based on the scatterplot and the value of the correlation coefficient, it would make sense to test the significance of this observed linear relationship between latitude and melanoma mortality rate. The appropriate hypotheses are:

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture