Optionally upload a CSV of data that will be available as data frame "df":
Lines <- "Date Miles\n 2005-10-05 100 2007-07-07 14945\n 2008-02-04 22663 2008-05-18 25695\n 2009-04-26 29500 2010-03-29 41900\n 2011-02-03 50000 2012-10-18 72300\n 2016-01-02 107620 2018-06-22 147803\n 2020-12-24 168650" dm <- read.table(textConnection(Lines), header = TRUE) dd=as.POSIXlt(dm$Date, format="%Y-%m-%d") dn=1900+dd$year+dd$yday/366 dm$DateN <- dn dm plot(Miles ~ DateN, data = dm, xlab = "Year", ylab = "Miles", main = "Car Mileage Over the Years" ) abline(-2.366e+07, 11790.0) miles.mod1 = lm(Miles ~ DateN, data = dm) summary(miles.mod1)
Examples
lists
matrix math
set operations
dates
time series linear regression
bar plot
box plot
pie chart
using uploaded data
plot a simple x-y function
normal distribution and histogram
linear regression
function with loop
functions, tables, math notation
logit regression
f statistic test