4.2 A first look at your data

You can use the names() function to see a list of variables (names and column number) in your data frame.

Use the head() function to preview the first rows of a data frame.

To view the entire data frame, either click on the object in the “Data” window or use View().

  names(dcps)  # identify variable names
## [1] "SchCode"     "SchName"     "SchType"    
## [4] "NumTested"   "ProfLang"    "ProfMath"   
## [7] "DataVERSION"
  head(dcps)   # see the first few rows of data
## # A tibble: 6 x 7
##   SchCode SchName SchType NumTested ProfLang ProfMath
##     <dbl> <chr>   <fct>       <dbl>    <dbl>    <dbl>
## 1     202 Aiton ~ Elemen~        72     5.56   15.3  
## 2     203 Amidon~ Elemen~       147    16.3    10.1  
## 3     450 Anacos~ High           67     4.48    1.43 
## 4     452 Ballou~ High          180     2.78    0.498
## 5     204 Bancro~ Elemen~       213    34.3    39.9  
## 6     205 Barnar~ Elemen~       224    38.4    39.7  
## # ... with 1 more variable: DataVERSION <chr>