A food processor specified that the contents of a jar of salsa should weigh 14 ± 0.10 ounces net. A statistical QC operation is set up, and the following data are obtained for one week:

Using regression analysis, analyze the effect of the day on the sample means for the weight of the contents of the salsa jars.

a. Construct an x-chart based on these five samples.

b. Construct an R-chart based on these five samples.

c. What points, if any, have gone out of control?

d. Discuss the results.

Transcribed Image Text:

Sample No 1- Monday 14.10 14.06 14.25 14.06 2- Tuesday 13.90 13.85 13.80 14.00 3- Wednesday 14.40 14.30 14.10 14.20 4- Thursday 13.95 14.10 14.00 14.15 5- Friday 14.05 13.90 13.95 14.60