When computing the standard deviation, why are the deviations from the mean squared?
What will be an ideal response?
ANS:
In order to compute the standard deviation (the average distance a score is from the mean), you need an average of the deviations. If you summed up the deviations from the mean, the sum would always be zero (arithmetic mean). By squaring the deviations, the negative signs disappear so that in the next step they can be summed without having the sum equal to zero, thus allowing the computations of the standard deviation to be completed.
You might also like to view...
At December 31, 2016, the accounting records of Tasty Foods Corporation contain the following: Accounts payable $16,000 Accounts receivable $40,000 Land $240,000 Cash ? Capital stock ? Equipment $120,000 Building $180,000 Notes payable $190,000 Retained earnings $160,000 If capital stock is $260,000, what is the December 31, 2016 cash balance?
a. $46,000 b. $506,000 c. $94,000 d. $86,000
A realistic goal is one in which
a. The supervisor believes the employee can be successful b. The employee and the supervisor believe the employee can do it and the resources are made available to the employee c. The employee believes he/she can be successful d. One that is not hard to achieve
The function of a task specialist is to
A. prevent team members from interacting with the external environment. B. facilitate groupthink among team members. C. reduce trust between team members. D. move the team toward accomplishment of objectives. E. micromanage team members.
The father had built his fortune as a real estate speculator and now devoted his energies to his new passion, pessimism. Which alternative would be the best choice given this new hobby?
The cold, calculating father did exactly that when examining the 27 year old failure to launch man child that had turned his walk in closet into a bedroom. As he saw it, there were five alternatives; each had its advantages and disadvantages, and under different circumstances, each had a different financial incentive. He laid it all out neatly in a table, but as not to arouse suspicion, he left the table's labels very generic, so the alternatives were simply labeled A through E while the different circumstances were simply numbered one through three. He flicked the gray ash off of his favorite purple smoking jacket and pondered the best course of action under each possible future. It was good to be devious, he decided. One Two Three A 19 6 20 B 26 5 48 C 24 18 17 D 43 34 15 E 36 34 15 A) A B) B C) C D) D