From wikipedia:
A dataset (or data set) is a collection of data.
Most commonly a dataset corresponds to the contents of a single database table, or a single statistical data matrix, where every column of the table represents a particular variable, and each row corresponds to a given member of the dataset in question. The dataset lists values for each of the variables, such as height and weight of an object, for each member of the dataset. Each value is known as a datum. The dataset may comprise data for one or more members, corresponding to the number of rows.
The term dataset may also be used more loosely, to refer to the data in a collection of closely related tables, corresponding to a particular experiment or event.
The mean of a set of data is also known is the average.
The average of a set of data is known as its "mean."
The mean of a set of data is the sum of that data divided by the number of items of data.
No. Here's one set of data where the mean is not one of the values: a set of 250,000 numbers. 125,000 of them are "1", 125,000 are "3". The mean of this data set is "2", which is not among the data.
It is misleading to use the mean as a descriptor of a data set when the median or mode would be more representative of the data set as a whole.
no. Some mean is a number from the data but some mean is completely different from its data.
When the data set consistys of a single value.
If the set of data are represented by a letter, then the mean is represented by that letter with a bar across its top.
The mode of the data is the number which occurs most frequently in the given set of data.
total marks of data set 1 is 6 x 8 = 48 total marks of data set 2 is 6 x 20= 120 now, the total mean of the combined data set is = (48 + 120) / (6 + 6) = 168 / 12 = 14
MEAN
1056269111. The set of data contains only one number and the mean of one number is itself!