The Proton production line involves a series of sequential operations that take place in a factory facility, where various components and parts are assembled to produce finished Proton cars. Proton have seven production lines in their manufacturing plant for their automotive parts where each production line produces 120, 100, 80, 116, 77, 94, 112 output per day.

(a)As the Production Manager for Proton, you are required to submit the daily report of the production plant. Calculate the mean, median, and mode from the data based on the output that has been provided.

(b)Also calculate the three critical parameters for measuring spread in the following ways:

i. Range

ii. Variance

iii. Standard Deviation