Please help me answer this question with detailed steps and answers, preferably done on a computer. If handwriting is required, please do not use cursive script

Question $3(\backslash (5+4\backslash )$ points$)$

A chocolate factory has weighed $4$ chocolate truffles coming out of production over $5$ working days to obtain the following data, weights are in grams.

a$)$ Group the data by day and find the sample average and range for each of the five samples. $\backslash ((5\backslash$mathrm$\{$pts$\})\backslash )$

b$)$ Find the center lines for X $-$bar and R chart $(4$ pts$)$