Question

Consider the STATA output below, in which the outcome variable is wage (rate of pay in dollars per hour) and the independent variables are total years of experience (ttl_exp), total years in current position (tenure), and number of years of school completed (grade). regrons wage top tenure prade Source 55 df MS Number of obs- 2225) - 120.02 0.000 Model 10363.7014 1364.56714 63124.2663 2225 20.3704588 74887.68 2220 39.2531214 Adj R-squared - 6.1468 Rot MSE wape Coet. Std. Err. 1954 Conf. Intervall Lex . 1734612 .2924091 .220752 .6370 .64945 0250756 prade .6318619 14.24 0 -6.12.1 .738887 -2.625189 How many observations are in this dataset (rounded to a whole number? o 10.964 o 2.229 o 129 o 2.225 Question 19 5 pts Consider the STATA output below, in which the outcome variable is average life expectancy of the population in years (le) and the independent variable is the current year (year, i.e. 1992, 1993, etc.) represe le year Source ss Number of obs 100 FI 1. 981 - 1981.6 Model 7618.91335 17618.91335 Prob sas.252305 90 6.99237146 Adj-squared...9166 Total 8384.16566 9983. 184612 Raat MSE 2.6443 What is the MS le Coel Std. Er .70270 11.01.00 -524.6687 19.260 -20.38 0.000 1954 Cont. Intervall 2142851 .37563 -560.1124 -489.2242 cons y-intercept value? Is it significantly associated (mathematically) with the outcome of average life expectancy of the population in years? (If someone was born in the year "o AD" what would the life expectancy be? Dose that make sense? Is it a value that makes "real world" sense, or "just mathematical" sense - explain. 0-525, significant, but doesn't make "real world sense." How can someone live for negative years? 525, significant, but doesn't make 'real world sense." How can someone live for over 500 years? 0.30, significant, but doesn't make real world sense." How can the average number of years be so low, but people reproduce? O 0.30, significant, but doesn't make 'real world sense." How can someone live for less than one year?

Answer 1

18)

o 2.229

19)

0-525, significant, but doesn't make "real world sense." How can someone live for negative years?

20)

For everyone one unit increase in calendar year, there is a 0.30 unit increase in the average life expectancy of the population. This is statistically significant because the p > It is less than 0.05.

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