Descriptive statiscs

descripive statics : is the one of the main branches of data analysis is . it is answering what happens in the data

  1. measure of central tendency
  2. Measure of variation of dispensation
  3. Measure of shape
  4. Mmeasure of postion
  5. Measure of frequency
  1. Data cleaning
  2. Data transformation
  3. Data measurement
  4. Data Validation and
  5. Data Vitualization

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 central tendency including :

  • Mean.
  • Mode
  • Median
  • Mid range
  • Maximum
  • Minimum and
  • Mad

Mean

In Statistics , there are more then 7 types of mean in cluding :

  1. Aritmetic mean
  2. Geometric mean
  3. Harmonic mean
  4. trimmed mean and
  5. eighted mean

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

x<-c(11,12,11,14,16,17,11,11)
summary(x)
##    Min. 1st Qu.  Median    Mean 3rd Qu.    Max. 
##   11.00   11.00   11.50   12.88   14.50   17.00
boxplot(x)

plot(density(x))

hist(x)