by kasi | May 31, 2010 | Descriptive statistics
Arithmetic mean is the sum of the values divided by the number of values in the raw data. Arithmetic mean is also called simple mean because of its wide usage as a measure of central tendency. There is slight difference in the formulas in case of population data... by kasi | May 30, 2010 | Descriptive statistics
The cumulative frequency divided by the total frequency is called relative cumulative frequency or percentage cumulative frequency. It is used to know the percentage of observations falling below a certain specified value. A table showing relative cumulative... by kasi | May 30, 2010 | Descriptive statistics
Cumulative frequency distribution shows the number of observations which fall below or above in a given class interval. If the number of observations fall below in a given class interval then it is called less than cumulative frequency distribution. On the other hand... by kasi | May 30, 2010 | Descriptive statistics
Frequency of a class divided by total frequency of all classes is called relative frequency. Relative frequency is expressed in terms of percentage therefore it is also known as percentage distribution. A table showing intervals with corresponding relative frequencies... by kasi | May 30, 2010 | Descriptive statistics
Now we know about class interval, class limits, size of class interval, frequency distribution, class boundaries and mid class. On the basis of all these concepts, we are now able to construct a frequency distribution table with the help of problem A. Problem A:...