Compute the variance-standard deviation

Question

Discussion:

Q-The following data contains the total fat , in grams per serving, for a sample of 20 chicken sandwiches from fast food chains.

Sandwich	Calories	Fat	Sat Fat	Carbs	Sodium
Wendy's Ultimate Chicken Grill	360	7	2	44	1100
Baja Fresh Original Baja Taco with Charbroiled Chicken	370	8	1	53	680
Burger King Smoky BBQ Fire Grilled Chicken Baguette	380	4	2	57	1580
Quiznos Sub Honey Bourbon Chicken on Wheat bread	400	5	1	57	1040
McDonald's Chicken McGrill	400	16	3	37	1020
Blimpie Grilled Chicken Hot Sub	470	20	4	51	910
Subway Oven Roasted Chicken Breast	470	20	6	46	970
Blimpie Buffalo Chicken Hot Sub	500	24	8	52	2570
Wendy's Spicy Chicken Fillet	510	19	4	57	1480
Taco Bell Ranchero Chicken Soft Taco (two tacos)	540	30	8	42	1580
KFC Oven Roasted Chicken Tender Wrap	550	23	4	55	1630
Subway Buffalo Chicken Sub	550	30	8	46	1760
Burger King Chicken Whopper	570	25	5	48	1410
Au Bon Pain Arizona Chicken	580	19	7	58	1590
Boston Market Rotisserie Chicken Carver	640	29	7	61	980
Chipolte Soft Tacos with Chicken (three tacos)	660	29	12	56	1630
Cosi Grilled Chicken with Tomato, Basil, and Mozzarella	720	30	11	65	1260
Atlanta Bread Company Chargrilled Chicken Pesto Panini	740	30	16	78	1660
Corner Bakery Café Chicken Pomodori Panini	910	40	18	86	1970
Panera Bread Tuscan Chicken on Rosamary & Onion Focaccia	950	56	10	76	2130

The data is as follows

7 8 4 5 16 20 20 24 19 30

23 30 25 19 29 29 30 30 40 56

a. Compute the mean, median, first quartile, and third quartile

b. Compute the variance, standard deviation, range, interquartile range, coefficient of variation, and Z scores. And there outlines? Explain

c. Are the data skewed? if so, how?

d. Based on the results of (a) through (c), what is the conclusions can you reach concerning the total fat of chicken sandwiches?