HDS_2122_ver2

library(tidyverse)

planets <- tibble(
  name = c("Mercury", "Venus", "Earth", "Mars", "Jupiter", "Saturn", "Uranus", "Neptune"),
  mass = c(0.33, 4.87, 5.97, 0.642, 1898, 568, 86.8, 102),
  length_of_day = c(4222.6, 2802, 24, 24.7, 9.9, 10.7, 17.2, 16.1),
  mean_temp = factor(c("positive", "positive", "positive", "negative", "negative", "negative", "negative", "negative"), 
                     levels = c("negative", "positive"), ordered = TRUE),
  n_moons = c(0, 0, 1, 2, 95, 146, 28, 16),
  ring_system = c(FALSE, FALSE, FALSE, FALSE, TRUE, TRUE, TRUE, TRUE),
  surface_pressure = c(0, 92, 1, 0.01, NA, NA, NA, NA)
)

planets

# A tibble: 8 × 7
  name        mass length_of_day mean_temp n_moons ring_system surface_pressure
  <chr>      <dbl>         <dbl> <ord>       <dbl> <lgl>                  <dbl>
1 Mercury    0.33         4223.  positive        0 FALSE                   0   
2 Venus      4.87         2802   positive        0 FALSE                  92   
3 Earth      5.97           24   positive        1 FALSE                   1   
4 Mars       0.642          24.7 negative        2 FALSE                   0.01
5 Jupiter 1898               9.9 negative       95 TRUE                   NA   
6 Saturn   568              10.7 negative      146 TRUE                   NA   
7 Uranus    86.8            17.2 negative       28 TRUE                   NA   
8 Neptune  102              16.1 negative       16 TRUE                   NA   

nrow(planets)

[1] 8

ncol(planets)

[1] 7

head(planets)

tail(planets)

glimpse(planets)

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