A multiple regression model is to be constructed to predict

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A multiple regression model is to be constructed to predict the heart rate in beats per minute (bpm) of a person based upon their age, weight and height. Data has been collected on 30 randomly selected individuals: show data Download the data 58 43 194 71 86 49 165 62 61 46 135 62 63 21 222 75 85 28 227 58 102 59 243 64 69 26 202 68 70 42 237 70 72 25 165 64 69 23 163 58 71 26 176 70 71 29 129 64 63 33 186 63 62 34 135 66 82 53 204 69 96 58 220 58 56 28 225 69 71 25 177 62 90 57 197 71 73 56 166 65 78 44 190 58 71 30 228 65 71 55 111 63 63 40 149 73 70 30 221 74 55 30 239 64 72 41 212 60 60 23 157 64 69 21 242 74 56 37 165 75 a)Find the multiple regression equation using all three explanatory variables. Assume that x1 is age, x2 is weight and x3 is height. Give your answers to 3 decimal places. y^ =  + age + weight + height b)At a level of significance of 0.05, the result of the F test for this model is that the null hypothesis isis not rejected. c)The explanatory variable that is most correlated with heart rate is: age weight height d)The explanatory variable that is least correlated with heart rate is: age weight height e)The value of R2 for this model, to 2 decimal places, is equal to  f)The value of s for this model, to 3 decimal places, is equal to  g)Construct a new multiple regression model by removing the variable height. Give your answers to 3 decimal places. The new regression model equation is: y^ =  + age + weight h)In the new model compared to the previous one, the value of R2 (to 2 decimal places) is: increased decreased unchanged i)In the new model compared to the previous one, the value of s (to 3 decimal places) is: increased decreased unchanged
  • 10 years ago
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