Quarterly earnings per share for Johnson & Johnson. Timeframe: 1960 to 1980 (84 quarters/21 years).
A text file used in FileWriter operations for storing logs. JJ.txt
# 1. Load the data jj_data <- read.table("path/to/jj.txt", header=TRUE) # 2. Convert to time series object (starting Q1 1960, frequency 4) jj_ts <- ts(jj_data, start=c(1960, 1), frequency=4) # 3. Make a time plot plot(jj_ts, type="l", main="J&J Quarterly Earnings", ylab="Earnings (USD)", xlab="Year") Use code with caution. Copied to clipboard Quarterly earnings per share for Johnson & Johnson
You can import the data and create a time plot to analyze the trend. JJ.txt
To stabilize the variance, a common technique is to take the logarithm of the data.