When using the mean: the variance or standard deviation.
When using the median: the range or inter-quartile range.
It is simple to calculate.
Put all the numbers in order and the median is the number that is in the middle!
You can find it by using the Pythagorean theorem if you know the side and the base of triangle. In an isosceles triangle the median is also the altitude. The formula is: (The measure of the side length)^2 - (The measure of the one half of the base length )^2 = (The measure of the altitude)^2. Find the square root of the result that you'll have the measure of the altitude.
So that you don't have as many different answers to work with
using a thermometer u can measure accurately at 1 decimal place
The variance or standard deviation.
Central tendency is measured by using the mean, median and mode of a set of numbers. Variation is measured by using the range, variance and standard deviation of a set of numbers.
It is simple to calculate.
to know what is the measure
It is a descriptive statistical measure used to measure the shape of the curve drawn from the frequency distribution or to measure the direction of variation. It is a measure of how far positively skewed (below the mean) or negatively skewed (above the mean) the majority (that's where the mode comes in) of the data lies. Useful when conducting a study using histograms. (mean - mode) / standard deviation. or [3(Mean-Median)]/Standard deviation
The median or mode should be used instead of the mean in distributions with extreme outliers. In such cases, the mean can be a misleading measure of central tendency and the median value or the mode value are typically more accurate measures.
The median can be calculated using the Median function. Assuming the values you wanted the median of were in cells B2 to B20, you could use the function like this: =MEDIAN(B2:B20)
Not normally because meters would be more appropriate
Put all the numbers in order and the median is the number that is in the middle!
Salad dressing is commonly measured using a tablespoon-size measuring spoon.
You cannot because the standard deviation is not related to the median.
A weighted mean is probably best. Certainly better than a median which throws away information from most of the observations.