Question: In RStudio, use the warpbreaks data frame. Define a new vector, median_breaks, and append it to the warpbreaks data frame. For each value of breaks,
In RStudio, use the warpbreaks data frame. Define a new vector, median_breaks, and append it to the warpbreaks data frame.
For each value of "breaks," the value of median_breaks should indicate if "breaks" is less than or greater than | equal to the median number of breaks.
median_breaks should equal "below" when "breaks" is less than the median; "above" when it is greater than or equal to.
The ifelse() function can be used to define median_breaks.
factor() can then be used to coerce the vector to a factor.
#You can check your median_breaks vector by checking the first six (6) elements against the below:
#[1] above above above below above above
#Use median_breaks to answer the following question:
Perform a chi-squared test of independence on the tension and median_breaks variables. From the options below, select the correct chi-squared statistic and associated p-value. This can be done using the chisq.test() function.
(a) chi-squared = 9.0869, p-value = 0.01064
(b) chi-squared = 62.5, p-value = 0.3875
(c) chi-squared = 0.29793, p-value = 0.5852
(d) chi-squared = 54, p-value = 0.004597
Please provide R code as well.
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