Reference no: EM132081441
Need Q2.using R.
Extend your function so that it takes a third parameter, which allows the caller to use a function other than mean() when calculating the lowerTrim. Call this argument sumFunc and give it a default value so that it operates like the original lowerTrim function. Call this revised function lowerTrim2
Check your function with the following calls:
lowerTrim2(-10:20, trimBelow = -5, median) lowerTrim2(-10:20, trimBelow = 0, sumFunc = summary)
The return values should be 8 and the summary values of 1, 5.75 10.5, 10.5, 15.2, and 20.
Previous information as follows:
Q1. Write a function called lowerTrim that takes 2 arguments: x and trimBelow. This function takes the average of those values in x that are greater than the trimBelow. Make x a required argument and supply a default value for trimBelow of negative infinity.
First create some variable to be used for testing later.
x = 1:5 y = letters z = list(a = 1:5, b = 1:10)
Now test your function with the following
lowerTrim(x) lowerTrim(-10:5, trimBelow = 0) lowerTrim(-10:5, -2) lowerTrim(x = -10:5, trimBelow = Inf)
The return values should be: 3, 3, 2, and NaN, respectively
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