Scientific mammal body size (solution)

Exercise

Output solution

Attaching package: 'dplyr'

The following objects are masked from 'package:stats':

    filter, lag

The following objects are masked from 'package:base':

    intersect, setdiff, setequal, union

Rows: 5731 Columns: 9
── Column specification ────────────────────────────────────────────────────────
Delimiter: "\t"
chr (7): continent, status, order, family, genus, species, reference
dbl (2): log_mass, combined_mass

ℹ Use `spec()` to retrieve the full column specification for this data.
ℹ Specify the column types or set `show_col_types = FALSE` to quiet this message.

[1] 4889

[1] 237

[1] 4576

[1] 153

# A tibble: 1 × 3
  genus        species  combined_mass
  <chr>        <chr>            <dbl>
1 Balaenoptera musculus     190000000

# A tibble: 1 × 3
  genus  species  combined_mass
  <chr>  <chr>            <dbl>
1 Suncus etruscus           1.8

[1] NA

[1] NA