Plot the residuals versus the fitted values

Assignment Help Econometrics

Reference no: EM131162747

To determine the effect of temperature on the yield of a certain chemical process, the process is run 24 times at various temperatures. The temperature (in ? C) and the yield (expressed as a percentage of a theoretical maximum) for each run are given in the following table. The results are presented in the order in which they were run, from earliest to latest.

Order	Temp	Yield	Order	Temp	Yield	Order	Temp	Yield
1	30	49.2	9	25	59.3	17	34	65.9
2	32	55.3	10	38	64.5	18	43	75.2
3	35	53.4	11	39	68.2	19	34	69.5
4	39	59.9	12	30	53.0	20	41	80.8
5	31	51.4	13	30	58.3	21	36	78.6
6	27	52.1	14	39	64.3	22	37	77.2
7	33	60.2	15	40	71.6	23	42	80.3
8	34	60.5	16	44	73.0	24	28	69.5

a. Compute the least-squares line for predicting yield (y) from temperature (x).

b. Plot the residuals versus the fitted values. Does the linear model seem appropriate? Explain.

c. Plot the residuals versus the order in which the observations were made. Is there a trend in the residuals over time? Does the linear model seem appropriate? Explain.

Reference no: EM131162747

Questions Cloud

Sociological concepts apply to everyday life : Examine how theory and sociological concepts apply to everyday life.

Examples of social force : What are 6 examples of social force? Is it religion? Or like the way you are as a person? Like an innovator? Is that a social force?

Fads and crazes a form of social norms : Are fashion fads and crazes a form of social norms? If it is, up to what extent?

Social problems-prejudice and discrimination : How does society's definition of family lead to social problems, prejudice and discrimination? Explain why or why not

Plot the residuals versus the fitted values : Plot the residuals versus the order in which the observations were made. Is there a trend in the residuals over time? Does the linear model seem appropriate? Explain.

Arguments of modernization theory : Summarize the main arguments of modernization theory and dependency theory with respect to the transformation of poor societies. How does the former approach see social change as more positive and easier than the second? What is the role of high-i..

Determine the critical path : Determine the critical path and the project completion time. - Calculate ES, LS, EF, LF, and slack time for each activity.

Consider quality of public schooling : Following the social-conflict approach, what are the problems in the U.S. educational system? Consider quality of public schooling, inequality among schools, and access to higher education. Also consider how class, gender, race, and ethnicity may ..

User Account

All Pages