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title: “Assignment 1 - SD with R” author: “Alekhya Kondragunta” date: “2024-09-03” output: html_document

#1. Find the SD for your measurements using R.
x <- c(1.2, 3.0, -4, 5, 6, -2, 4, 6, 6, 2.3, 5, 6, 4, 3) 

sd(c(1.2, 3.0, -4, 5, 6, -2, 4, 6, 6, 2.3, 5, 6, 4, 3), na.rm=TRUE) 

## [1] 3.074148

#2. Use the following functions. Create variables to help your calculations.
#i. sum, mean, length, ^2 (to square a value), sqrt 
sum(c(x)) 

## [1] 45.5

mean(c(x)) 

## [1] 3.25

length(c(x))

## [1] 14

x^2

##  [1]  1.44  9.00 16.00 25.00 36.00  4.00 16.00 36.00 36.00  5.29 25.00 36.00
## [13] 16.00  9.00

x_sqrt <- sqrt(x) #We are applying the sqrt to the vector x

## Warning in sqrt(x): NaNs produced

x_sqrt

##  [1] 1.095445 1.732051      NaN 2.236068 2.449490      NaN 2.000000 2.449490
##  [9] 2.449490 1.516575 2.236068 2.449490 2.000000 1.732051

#3. Investigate your data. Plot histogram of data with function hist 
hist(x)

#4. How different are the plots for 3 vs. 10?
hist(x, breaks=10)

hist(x, breaks=3)