The table below show the marks obtained by 500 students in an exam

Calculate:

a. Mean, b. Mode, c. Median,

d. Standard deviation, e. Variance, f.

Range, g. Mean deviation,

Marks (%) 1-10, 11-20 ,21-30, 31-40, 41-

50 ,51-60 ,61-70 ,71-80, 81-90, 91-100

Frequency 5 ,15 ,40 ,105, 150, 120 ,50, 10 ,

5 0

Acampus club held a bake sale as a fund raiser, selling coffee, muffins, and bacon and eggs sandwiches. the club members charged $1 for a cup of coffee, 3$ for a muffin , and $4 for a back. and egg sandwich. they sold a total of 55 items , easing $119. of the club members sold 5 more muffins than cups of coffee, how many bacon and egg sandwiches he’s did they sell