HW #1; 20 pts
2 point penalty each day late
Assigned homework should be turned by the end of day listed on Blackboard. Provide your R code and/or figures along with your answer below each exercise. Make sure that your answers are not in bold so that I can easily differentiate between your answer and my question.
Exercise 1
Use R as you would a calculator to find answers to the following (be sure to report R code):
- (92-63)*(3/4)
- (3+13) / 42
Exercise 2
Show the R code needed to create each of the following vectors. Use the seq function for vec2 and rep function for vec3. (Hint: use the “?rep” function in R to see the documentation and examples for the rep function.)
vec1: henry johnson jackson clay bates nevada
vec2: 5 10 15 20 25 30
vec3: 4 4 4 8 8 8
Exercise 3
Use the data.frame command to put the individual vectors from exercise 2 (vec1, vec2, and vec3) into a single data frame named exer3. Report the R code as your answer.
Exercise 4
Rename the column names in exer3 to ‘county’, ‘precip’, and ‘temp’.
Exercise 5
The measurements for the precip column in exer3 are in centimeters. Convert these measurements to millimeters by creating a new column in the exer3 data frame and label it ‘precipmm’. (Hint: values in ‘precipmm’ should be larger than in ‘precip’ by a factor of 10).
