Descriptive Statistics

Geometric mean for ungrouped data

Feb 20, 2024
STATISTICS

Geometric mean for ungrouped data Let $x_i, i=1,2, \cdots , n$ be $n$ positive observations then the geometric mean of...

1 min Read

Harmonic Mean for grouped data

Feb 20, 2024
STATISTICS

Harmonic mean for grouped data Let $(x_i,f_i), i=1,2, \cdots , n$ be given frequency distribution. Then the harmonic mean of...

1 min Read

Harmonic Mean for ungrouped data

Feb 20, 2024
STATISTICS

Harmonic mean for ungrouped data Let $x_i, i=1,2, \cdots , n$ be $n$ positive observations then the harmonic mean of...

1 min Read

Inter Quartile Range for grouped data

Feb 20, 2024
STATISTICS

Inter Quartile Range for grouped data Inter quartile range is given by $IQR = Q_3-Q_1$ where, $Q_1$ is the first...

4 min Read

Inter Quartile Range for ungrouped data

Feb 20, 2024
STATISTICS

Inter Quartile Range for ungrouped data Inter quartile range is given by $IQR = Q_3-Q_1$ where $Q_1$ is the first...

3 min Read

Karl Pearson coefficient of skewness for grouped data

Feb 20, 2024
STATISTICS

Karl Pearson coefficient of skewness for grouped data Let $(x_i,f_i), i=1,2, \cdots , n$ be given frequency distribution. Karl Pearson...

5 min Read

Karl Pearson coefficient of skewness for ungrouped data

Feb 20, 2024
STATISTICS

Karl Pearson coefficient of skewness for ungrouped data Let $x_i, i=1,2, \cdots , n$ be $n$ observations. Formula The Karl...

3 min Read

Kelly Coefficient of skewness for grouped data

Feb 20, 2024
STATISTICS

Kelly’s coefficient of skewness for grouped data For a symmetric distribution, the first decile namely $D_1$ and nineth decile $D_9$...

5 min Read

Kelly Coefficient of skewness for ungrouped data

Feb 20, 2024
STATISTICS

Kelly’s Coefficient of Skewness for ungrouped data For a symmetric distribution, the first decile namely $D_1$ and nineth decile $D_9$...

4 min Read

Mean Absolute Deviation for grouped data

Feb 20, 2024
STATISTICS

Mean absolute deviation for grouped data Let $(x_i,f_i), i=1,2, \cdots , n$ be given frequency distribution. The mean of $X$...

2 min Read

Mean Absolute Deviation for ungrouped data

Feb 20, 2024
STATISTICS

Mean absolute deviation for ungrouped data Let $x_i, i=1,2, \cdots , n$ be $n$ observations. The mean of $X$ is...

2 min Read

Mean median and mode for grouped data

Feb 20, 2024
STATISTICS

Mean, median and mode for grouped data Let $(x_i,f_i), i=1,2, \cdots , n$ be given frequency distribution. Formula Sample mean...

4 min Read