Question

Employers often use standardized measures to gauge how likely it is that a new employee with little to no experience will succeed in their company. One such factor is intelligence, measured using the Intelligence Quotient (IQ). To show that this factor is related to job success, an organizational psychologist measures the IQ score and job performance (in units sold per day) in a sample of 10 new employees.

IQ	Job Performance
100	16
115	39
108	22
98	20
120	44
147	53
132	43
85	59
105	29
110	38

(a) Convert the following data to ranks and then compute a Spearman correlation coefficient. (Round your answer to three decimal places.)
_______?

(b) Using a two-tailed test at a 0.05 level of significance, state the decision to retain or reject the null hypothesis.

Retain the null hypothesis

OR

Reject the null hypothesis.    

Answer 1

I done all calculations by using Excel

to calculate spearman rank correlation

first rank the two data sets the use formula CORREL(array1,array2)

array 1 is Rank(IQ), and array 2 is Rank (job performance)

T critical=TINV(0.05,d.f) in excel it gives us critical value.