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there are some cases in calculating mean
- when only variable is given:
sum of total observations divided by number of observation
- When discrete series are given:
summation of the product of value of variable and its frequency the divided by summation of frequencies
Add together all the number in the data set.
Count the number of numbers in the data set.
Divide the sum by the number of values. That is the (arithmetic) mean.
If a question simply asks for the mean, it is referring to the arithmetic mean.
To find the geometric mean, count up the number of numbers in the data set and call than n. Multiply all the numbers together and take the nth root.
You first add the data up and then you divide the number you get by how many numbers are in your set data.
For example:
3, 4, 6
Add them up, first. 4+2+6= 12.
Now, divide by how many numbers were in the set of data. There were 3 numbers, so 12/3 equals 4.
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What is another word for the mean in a set of data?
The mean of a set of data is also known is the average.
What do you call the average of a set of data?
The average of a set of data is known as its "mean."
Find the mean of the data?
The mean of a set of data is the sum of that data divided by the number of items of data.
Is it true that in large data sets the mean is always one of the data values?
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.
When is it misleading to use the mean as a descriptor of a data set?
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.
Does the mean have to be a member of the set of data?
no. Some mean is a number from the data but some mean is completely different from its data.
When can the mean be the largest value in the data set?
When the data set consistys of a single value.
How do you represent the mean of a set data?
If the set of data are represented by a letter, then the mean is represented by that letter with a bar across its top.
What is the mean of the combined data sets if the mean of a data set of 6 is 8 and the mean of a different data set of 6 numbers is 20?
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
What does mode for the set of data mean?
The mode of the data is the number which occurs most frequently in the given set of data.
What is the set data structure?
MEAN
How do you find the mean of the data?
Th find the mean of a data set, you add up all the values in the data set and divide this sum by the number of data values. For example, the mean for the data set 2, 5, 6, and 7 is given as 2 plus 5 plus 6 plus 7, which is 20. You divide this sum by number of values in the data set, which is 4 to get 5 as the mean.
