Question: 3. Suppose we are interested in which factor determines children's weight in USA. We collect data from more than 4000 children. We suspect their weight

3. Suppose we are interested in which factor determines children's weight

3. Suppose we are interested in which factor determines children's weight in USA. We collect data from more than 4000 children. We suspect their weight (in lb) would be affected by their height (in inch), their gender (sex: 0 means male and 1 means female), their IQ, their race (White, Black, others). See the results below

a. What is the dependent and independent variable? (5 point)

b. How many observations do we have? (5 point)

c. For height, gender, and IQ, which one(s) is significant in affecting weight, and which one(s) is not? Why? (10 point)

d. why is there no "white" shown in the race? (5 point)

e. Interpret the coefficient of Sex, Black, and height (15 point)

in USA. We collect data from more than 4000 children. We suspect

their weight (in lb) would be affected by their height (in inch),

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