LabAssignment9.pdf - BIOL 3000 – Lab Assignment #9 Name:...

BIOL 3000 – Lab Assignment #9
Name:
CIN:
Instructions: For all of the problems below, copy both the R commands and the results of the R
commands into the green boxes.
1. Run the Pupa Weight applet (see handout), save the data in a csv file, and import the results
as a data frame called
pupa
in R . [Remember to set the proper variables as factors!] Type the
name of the data frame to display the data. Copy/paste your R commands and the resulting
output into the green box below. (1 point)
2. Use the
aggregate()
function to compute the sample sizes (
pupan
), means (
pupam
), and
standard deviations (
pupasd
) for the pupa weights, and then compute the standard errors
(
pupase
) of the pupa weights. Make sure the numeric values are visible in your output.
Copy/paste your R commands and the resulting output into the green box below. (1 point)