LEVELS:Displays levels of each variable in the data
TABLE:Display the count of each levels present in the data
EMPLOYEE PERFORMANCE
RAM VG (Very good)
SAMANYU G (Good)
JACK EXC(Excellence)
JILL VG (Very good)
JONE EXC (Excellence)
LEVELS:3(EXC,VG,G)
TABLE:EXC=2,VG=2,G=1
str:displays the datatype of each variable in the data
class:dataframe
Example: lp.csv
Name Age Marks
surya 29 98
sivi 10 23
somu 24 99
bapu 26 80
jack 47 89
jone 34 79
solution:
data1<-read.csv("lp.csv)
levels(data1$Marks)
table(data1$Marks)
str(data1)
class(data1)
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