In the Process of Collecting Weight and Height Data from 29

question 59

Essay

In the process of collecting weight and height data from 29 female and 81 male students at your university, you also asked the students for the number of siblings they have. Although it was not quite clear to you initially what you would use that variable for, you construct a new theory that suggests that children who have more siblings come from poorer families and will have to share the food on the table. Although a friend tells you that this theory does not pass the "straight-face" test, you decide to hypothesize that peers with many siblings will weigh less, on average, for a given height. In addition, you believe that the muscle/fat tissue composition of male bodies suggests that females will weigh less, on average, for a given height. To test these theories, you perform the following regression: $\widehat { \text { Studentw } }$ = -229.92 - 6.52 × Female + 0.51 × Sibs+ 5.58 × Height, $R ^ { 2 }$ =0.50, SER = 21.08
where Studentw is in pounds, Height is in inches, Female takes a value of 1 for females and is 0 otherwise, Sibs is the number of siblings.
Interpret the regression results.

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Definitions:

Cash Savings

Funds that are kept on hand or in a bank account and are readily available for use in emergencies or for future purchases.

Simple Rate of Return

The percentage of annual incremental net operating income to the initial investment cost.

Cash Operating Costs

Expenses directly related to the production of goods or provision of services that must be paid in cash.

Annual Depreciation

The allocation of the cost of an asset over its useful life, recognized each year.