What is Mean (997, 999, 995, 999, 998, 996, 998, 997)?

The below workout with step by step work help grade school students or learners to understand how to find what is the mean or average for data set 997, 999, 995, 999, 998, 996, 998 and 997 to measure or locate the center point of sample or population data which involved in the statistical survey or experiment, to draw conclusions of sample or population data characteristics.
Mean :
step 1 Address the formula, input parameters & values.
Formula:

µ = n ∑ i = 0 X_in
Input parameters & values
x₁ = 995; x₂ = 996, . . . . , x₈ = 999
number of elements n = 8
Find sample or population mean for 997, 999, 995, 999, 998, 996, 998 & 997

step 2 Find the sum for dataset 997, 999, 995, 999, 998, 996, 998 & 997

µ = n ∑ i = 0 X_in
= (995 + 996 + 997 + . . . . + 999)/8

step 3 Divide the sum by number of elements of sample or population
= 7979/8
= 997.375
Mean (997, 999, 995, 999, 998, 996, 998, 997) = 997.375

997.375 is the mean for dataset 997, 999, 995, 999, 998, 996, 998 & 997 from which the standard deviation about to be measured to estimate the common variation of the sample or population dataset from its central location.

Median :
step 1 To find Median, arrange the data set values in ascending order
Data set in ascending order : 995, 996, 997, 997, 998, 998, 999, 999

step 2Since the total number of elements in the dataset is 8 (EVEN number), the median is the average of 4^th and 5^th elements (two middle numbers) for the above dataset.
Therefore,
997 + 998/2= 997.5
Median = 997.5

Mode :
step 1 To find Mode, check for maximum repeated elements in the asending ordered dataset 995, 996, 997, 997, 998, 998, 999, 999
Most repeated element : 997, 998 & 999
Mode = 997, 998 & 999