Descriptive Stattistics

Descriptive statistics: is one of the main branches of data analytics. it is answering ” what happens is the data”?.

it is classified into 5 main categories including:

measure of central tendecy
measure of variation or despersion
measure shapes
measure of position and
measure of frequency.

we will cover by the following order:

data cleaning,
data transformation,
data measurement,
data validation, and
data visualization.

Measure of central tendency

measure of central tendency acting as the back bone of the descriptive statistics.

7 main elements are the foundation of the centrak tendency including:

mean,
mode,
median,
mid-rage maximum,
minimum, and
mad

Mean

In statistics, there are more than 7 types of mean including:

arithmetic mean,
geometric mean,
harmonic ,mean,
trimmed mean, and
weighted mean.

\[x^2=x^n-\alpha+\eta-\beta\]

x<-c(11,12,11,14,13,25,16,16,11,12,10)
summary(x)

##    Min. 1st Qu.  Median    Mean 3rd Qu.    Max. 
##   10.00   11.00   12.00   13.73   15.00   25.00

boxplot(x)

plot(density(x))

hist(x)