Bone strength. Exercise 2.18 (page 98) gives the bone strengths of the dominant and the nondominant arms for 15 men who were controls in a study. (a) Plot the data. Use the bone strength in the nondominant arm as the explanatory variable and bone strength in the dominant arm as the response variable. (b) The least-squares regression line for these data is dominant 2.74 10.936 nondominant2 Add this line to your plot. (c) Use the scatterplot (a graphical summary) with the least-squares line (a graphical display of a numerical summary) to write a short paragraph describing this relationship.
Business Statistics Notes Week 1 & 2: August 23, August 30 Quantitative Data: Discrete (e.g. number of children) Continuous (e.g. weight, volume) Qualitative Data: information about qualities; information that can't actually be measured Nominal Data (nomialnames) Lowest form of data (e.g. comparison) Nonnumeric label/code Equality (=) relationship No meaningful data (e.g. What is your gender...male, female / What is your hair color...blonde, brown, black, other ) Ordinal Data (numerical) All characteristics of interval data Data labels with order Equality (=) greater, less than >< No meaningful interval distance (e.g. How do you feel today..1. very happy 2. Unhappy 3. Okay 4. Happy
