Mean and median are the measures of central location that always have one value. This is true for a set of grouped or ungrouped data.
A frequency distribution of numerical data where the raw data is not grouped.
Suppose you compare the mean of raw data and the mean of the same raw data grouped into a frequency distribution. These two means will be
The main need to work with grouped data was to reduce the number of data points that need to be stored and processed in calculation. With modern computers the storage and computation are not likely to be issues in many situations and so there is no need to use grouped data.
A grouped frequency table is a statistic method to organize and simplify a large set of data in to smaller groups.
Commutativity.
Ungrouped data is data that is not grouped in a specific order. Grouped data is a set of data that has unique characteristics in common.
(q3-q1)/2
A frequency distribution of numerical data where the raw data is not grouped.
Nothing, they stealing yo data
ungruped data are those type of data which are not proper arranged or order
Central TendencyIn central tendency the large group of data is grouped into a single value for effective business decision making.
D=E1+((dN/10)-Cf)(I)/F The formula of deciles is different for grouped and ungrouped data.
same as grouped data i.e. (upper limit+lower limit)/2
Suppose you compare the mean of raw data and the mean of the same raw data grouped into a frequency distribution. These two means will be
Data can be grouped or ungrouped. The categories data are grouped in depend on the data. For example, data collected about people could be grouped as male/female, by ages, or some other common characteristic. Data collected about dogs could be grouped by breed of dog, age, long hair/short hair, or size.
There are two type of direct method one is used in grouped data and second one used in ungrouped data
A box and whiskers plot, A frequency plot (ungrouped) A cumulative frequency plot (ungrouped), A grouped frequency of cu freq plot should give a number close to (and larger than) the greatest value.