How to calculate percentiles and quartiles??🤔📊

standard score
z score
test score
percentile
cumulative frequency
quartiles
deciles
interquartile
25th quartile
50th quartile
75th quartile
outliers
formulas

range
population variance standard deviation
sample variance and standard deviation
variance and standard deviation for grouped data

coefficient in variation
range rule thumb
chebyshev's theorem
the empirical normal rule
linear transformation of data

central tendency
mean
median
mode
weighted mean
midpoint
mid class

Central tendency and dispersion
Central tendency mean median mode
Measure of variation in statistics
Measure of variation or dispersion
The range
Statistical test and p value
Anova test شرح
Chi square test شرح بالعربي

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