Daily closing stock prices of the three tech companies Microsoft, Apple and IBM between 2007 and 2019.
data(tech)A dataframe with 3158 rows and 6 columns.
Data gathered using the quantmod package.
data(tech)
head(tech)
#> date quarter year apple microsoft ibm
#> 1 2007-01-03 2007-1 2007 11.97143 29.86 97.27
#> 2 2007-01-04 2007-1 2007 12.23714 29.81 98.31
#> 3 2007-01-05 2007-1 2007 12.15000 29.64 97.42
#> 4 2007-01-08 2007-1 2007 12.21000 29.93 98.90
#> 5 2007-01-09 2007-1 2007 13.22429 29.96 100.07
#> 6 2007-01-10 2007-1 2007 13.85714 29.66 98.89
# NOT RUN - change in correlation over time
# library(dplyr)
# tech_grp <- tech %>%
# group_by(year) %>%
# inspect_cor()
# tech_grp %>% show_plot()