Science Fair: Data Analysis Brief Statistics

Science Fair Data Analysis Data collected during experiments needs to be analyzed. Part of the analysis process is to incorporate some statistics.

Statistics for Science Fair After collecting the data from the 30 to 50 trials, You must find the: MEAN MEDIAN MODE RANGE For the entire data collected.

MEAN The mean is the average of all the trials. To find mean you must add the numbers (data) of each trial and then divided by the number of trails. You would add natural sponge trials together and get an average, then synthetic sponge trials and find their average. Trials Natural Sponge Synthetic Sponge 1 2 ml 2.5 ml 2 2.4 ml 3 2.1 ml 4 2.2 ml 5 2.2. ml 6 7 2.3 ml 8 9 10

MEDIAN The median is the middle number of all the trials. To find the middle: Place all numbers in order. Count until reach middle of line. If there is an even number of trials: Place all numbers in order Add the two middle numbers Then divide the results by 2 to find middle number. Trials Natural Sponge Synthetic Sponge 1 2 ml 2.5 ml 2 2.4 ml 3 2.1 ml 4 2.2 ml 5 2.2. ml 6 7 2.3 ml 8 9 10

MODE The mode is the number that is repeated most often. In this case for Natural Sponge: 2 Synthetic sponge: 2

RANGE The largest number subtracted by the smallest number of the trials. Do both natural and Synthetic sponges separately. Largest: 2.2 Smallest: 2.0 Total: 0.2 is range