Arithmetic Mean
by The arithmetic mean,’ mean or average is calculated by summing all the individual observations or …
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Percentiles
Percentile is in everyday use, but there is no universal definition for it. The most …
Quartile Deviation
The Quartile Deviation is a simple way to estimate the spread of a distribution about …
Median Characteristics, Applications and Limitations
The median of a set of data values is the middle value of the data …
Mode: Characteristics, Applications and Limitations
The mode is a statistical term that refers to the most frequently occurring number found …
Simple and Weighted average
Simple Averages Simple average of a set of values is determined by dividing the sum …
Measures of Central Tendency
Measures of Central Tendency or Averages have been defined differently by different statisticians. “A measure …
Classification and Tabulation, Objects, General rules for the construction of tables
Tabulation is the systematic arrangement of the statistical data in columns or rows. It involves …
Methods and instruments of data collection
Quantitative data collection methods typically use standardized response categories. Surveys are the most common example. …
Methods of Sampling
Probability Sampling Techniques Random Sampling When: There is a very large population and it is …