Words Typed 30,44,60,65,50,55,53,44,35, 31 44,53,61,40,52,53,50,33,52,45 Sucess

Question

Words Typed

30,44,60,65,50,55,53,44,35, 31

44,53,61,40,52,53,50,33,52,45

Sucess

1,3,7,9,8,4,3,4,2,4

5,6,9,4,6,5,8,4,7,5

what is the value of Pearson r?

1.00

.66

.75

.72

what is the value of Spearman rho?

.66

.75

1.00

.002

Exercise for Chapter 9 1, Enter the scores showD in Tahle 9.I en page 93 into SPSS Statistics. the "Vari name the firer vatiable Wurds snd label il Words Typed ver Minute. wonde typed per minute nn n tyning tert for opplicants fur the jub uf office clerk! Then, the "Dara View" mode. enter tho suurus itu wtder 30, 44, Ka, etc 1. umber of Hards zwwsi per 65 50 53 3s 3ll so sz 44 53 61 40 32 33

Explanation / Answer

The R-code is:

words <- c(30,44,60,65,50,55,53,44,35,31,44,53,61,40,52,53,50,33,52,45)
success <- c(1,3,7,9,8,4,3,4,2,4,5,6,9,4,6,5,8,4,7,5)
cor(words,success, method = "pearson")
cor(words, success, method="spearman")

The output is:

> cor(words,success, method = "pearson")
[1] 0.7491278
> cor(words, success, method="spearman")
[1] 0.6593077

So the correct answers are:0.75 and 0.66 respectively.

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