NINILFARS PALL IT Awo BA 45: STATISTICs FALL 2015 HOMEWORK 2 (30 points) Dues Se

Question

NINILFARS PALL IT Awo BA 45: STATISTICs FALL 2015 HOMEWORK 2 (30 points) Dues Sep 25, 2017 1. A researcher studying the effeets of management on engagement collects data from 30 participants. She carefully selects 3 managers management styles: authoritarian, managers manages 10 emp researcher then retrospectively collects and evaluates job performance evaluations for these employees, which are done by their peers, and are independent of the managerial evaluation (8 points), at work place to represent 3 authoritative and permim which are included in the Each of these mole (m-30). The a) What would you expect was the researcher's hypothesis? (note: A research hypothesis should contain the direction of the expected result.) b) Find the independent variable. c) Find the dependent variable. d) Find the population of this study. c) Find the sample of this study ) Provide the definition of statistics and identify (i.e., describe in words) a in which we might be interested in. rovide the definition of parameters and identify (i.e., deseribe in words) a parameter in which we might be interested in. 2. For the following scores (10 points): x, = 1, X 2-2, x,-4, Y,-3, Y,-1, Y, . 2, compute f) (2 X) + l is the same as either (d) or (e), which one? i) Which one? as ei o) xf p) or

Explanation / Answer

2)

a) summation of all the X values = 1+2+4 = 7

b)summation of all the square of X values = 1+4+ 16 = 21

c) square of the summation of x values = 1+2+4 = 7 = 7*7 = 49

d)  summation of all the X values + 1 = 1+2+4 = 7   

so 7+1 = 8

e) add 1 to all X and add them 1+1 + 2+1 +4+1 = 10

f) This is same as D

g) This is nothing but square of the result of d = 8*8 = 64

h) This is nothing but square of the result of e =10*10 = 100

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