Question $3$:

You are provided with cell$\_$viability.csv file that contains the results from the cell viability assay that

recorded the percent of cell viabilities with three drugs treatments.

a$.$ Read the table into cell.via dataframe

b$.$ Write a function calculate$\_$mean$\_$viability $()$ to calculate mean viability for each drug treatment. When

you call the function calculate$\_$mean$\_$viability $($cell$.$via$),$ it should print the mean viability of each drug

treatment.

c$.$ Write a Function calculate$\_$sd$\_$viability $()$ to calculate standard deviation of viability for each drug

treatment. When you call the function calculate$\_$sd$\_$viability$($cell$.$via$),$ it should print the standard

deviation of each drug treatment.

d$.$ Write a function plot$\_$dose$\_$response$\_$curves $()$ to plot dosage$-$response curves for each drug where

the $x-$axis should have dosage and $y$ axis contains the percent viability. When you call the function

plot$\_$dose$\_$response$\_$curves$($cell$.$via$),$ it should print dose response curve of each drug. You need to use

for loop within the function to plot the dose response curve of three drugs. Generate all the three curves

into a single figure by mentioning the following function before the plot function.

par$(mfrow=c(3,1))$

This function will help to generate all the three plots one below the other.

For your easy understanding the plot is provided here.