what different with those question. pl answer question 2 use R studio 1.What is the value...
what different with those question. pl answer question 2 use R studio
1.What is the value of the chi square test statistic (2dp) for the following dataset? Blue eyes with purple hair=56, blue eyes with green hair=84, Yellow eyes with purple hair=32, yellow eyes with green hair = 17.
2.Calculate expected cell count (2dp) for people with blue eyes and purple hair from the following dataset: Blue eyes with purple hair=56, blue eyes with green hair=84, Yellow eyes with purple hair=32, yellow eyes with green hair = 17.
Homework Answers
R- Code
observed_table <- matrix(c(56, 32, 84, 17), nrow = 2, ncol =
2, byrow = T)
rownames(observed_table) <- c('Purple Hair', 'Green Hair')
colnames(observed_table) <- c('Blue Eyes', 'Yellow Eyes')
observed_table
X <- chisq.test(observed_table)
X
X$expected
--------
Output(1)
> observed_table
Blue Eyes Yellow Eyes
Purple Hair 56 32
Green Hair 84 17
> X <- chisq.test(observed_table)
> X
Pearson's Chi-squared test with Yates' continuity correction
data: observed_table
X-squared = 8.3525, df = 1, p-value = 0.003852
--------------------------
Output(2) Expected value table
> X$expected
| Blue Eyes | Yellow Eyes | |
| Purple Hair | 65.18519 | 22.81481 |
| Green Hair | 74.81481 | 26.18519 |
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pl use r studio to do that 1 Calculate expected cell counts (2dp) for people with blue eyes and purple hair from the following dataset: Blue eyes with purple hair=56, blue eyes with green hair=84, Yellow eyes with purple hair=32, yellow eyes with green hair = 17. 2 Determine Spearman’s Rho coefficient for the following data. x<-c(56,56,65,65,50,25,87,44,35) y<-c(87,91,85,91,75,28,122,66,58)
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