Question

a how to find mean of data
b. how to find range of data​

Answer 1

Answer:

The Mean

x¯¯¯=∑xN

Here,

∑ represents the summation

X represents observations

N represents the number of observations .

Or

Mean = Sum of all observations/ Total no. Of observations

Range = Highest observation - Lowest Observation

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Answer 2

Step-by-step explanation:

a) To find the arithmetic mean of a data set, all you need to do is add up all the numbers in the data set and then divide the sum by the total number of values.

Let’s look at an example. Say you’re given the following set of data:

6,10,3,27,19,2,5,14

To find the mean, you’ll first need to add up all the values in the data set like this:

6+10+3+27+19+2+5+14

Note that you don’t need to rearrange the values here (though you may if you wish to) and can simply add them in the order in which they’ve been presented to you.

Next, write down the sum of all the values:

6+10+3+27+19+2+5+14=86

The last step is to take this sum (86) and divide it by the number of values in the data set. Because there are eight different values (6, 10, 3, 27, 19, 2, 5, 14), we'll be dividing 86 by 8:

86

8

=10.75

The mean, or average, for this set of data is 10.75

b) The range is the simple measurement of the difference between values in a dataset. To find the range, simply subtract the lowest value from the greatest value, ignoring the others.