Below is the uncorrected machine-read text of this chapter, intended to provide our own search engines and external engines with highly rich, chapter-representative searchable text of each book. Because it is UNCORRECTED material, please consider the following text as a useful but insufficient proxy for the authoritative book pages.
87 This Appendix shows the data concerning number of vendors vs. business size for a sample of establishments in NYC in the food, wholesale trade, and retail trade sectors. Retail Trade A p p e n d i x B Number of Vendors vs. Business Size Figure 13. Number of vendors vs. number of employees: retail trade industry. 1 10 100 0 10 20 30 40 50 60 70 80 90 100 Employment V en do rs 0.032513872 0.001057152 - 0.007130904 248.6312227 124 1 7981.194665 7981.1947 0.129109 0.719978792 122 7541733.16 61817.485 123 7549714.355 t S tat P- value Lowe r 95% Uppe r 95% - 62.71341 23.85713014 - 2.628707 0.0096731 - 109.94098 - 15.48584 0.1214605 0.338031182 0.3593174 0.7199788 - 0.54770598 0.790627 SUMMARY OUTPUT Regression Statistics Multiple R R Square Adjusted R Square Standard Error Observations ANOVA df SS MS F Significance F Regression Residual Total Coefficients Standard Error Intercept X Variable 1 As shown, the coefficient for the number of employees as an independent variable is not statistically significant; in contrast, the intercept is significant at the 90% confidence level. As a result, the number of vendors that deliver products to these establishments is statistically constant.
88 Wholesale Trade As shown, the coefficient for the number of employees as an independent variable is not statistically significant; in contrast, the intercept is significant at the 99% confidence level. As a result, the number of vendors that deliver products to these establishments is statistically constant. Figure 14. Number of vendors vs. number of employees: wholesale trade industry. 0 10 20 30 40 50 60 70 80 90 100 Employment 1 10 100 V en do rs 0.032513872 0.001057152 - 0.007130904 248.6312227 124 1 7981.194665 7981.1947 0.129109 0.719978792 122 7541733.16 61817.485 123 7549714.355 t S tat P- value Lowe r 95% Uppe r 95% - 62.71341 23.85713014 - 2.628707 0.0096731 - 109.94098 - 15.48584 0.1214605 0.338031182 0.3593174 0.7199788 - 0.54770598 0.790627 SUMMARY OUTPUT Regression Statistics Multiple R R Square Adjusted R Square Standard Error Observations Significance FFMSSSdf Regression Residual Total Coefficients Standard Error Intercept X Variable 1 ANOVA
89 Food As shown, the coefficient for the number of employees as an independent variable is not statistically significant; in contrast, the intercept is significant at the 80% confidence level. As a result, the number of vendors that deliver products to these establishments is statistically constant. Figure 15. Number of vendors vs. number of employees: food industry. 1 10 100 0 10 20 30 40 50 60 70 80 90 100 Employment V en do rs 0.060961414 0.003716294 - 0.00773524 150.4642036 89 1 7347.044418 7347.0444 0.3245236 0.570369777 87 1969634.461 22639.477 88 1976981.506 t S tat P- value Lowe r 95% Uppe r 95% - 22.7595 18.67544437 - 1.218686 0.2262578 - 59.8789632 14.359971 0.1751761 0.30750464 0.5696697 0.5703698 - 0.43602267 0.7863748 SUMMARY OUTPUT Regression Statistics Multiple R R Square Adjusted R Square Standard Error Observations df S S MS F Significance F Regression Residual Total Coefficients Standard Error Intercept X Variable 1 ANOVA
