eddie alvarez; marco soto; chantz skaer; mariela ramirez;anna perales eddie alvarez
TRANSCRIPT
Mean; medianMean, Median, Mode, and Range
Eddie Alvarez; Marco soto; chantz skaer; Mariela ramirez;anna perales
April 3,2012
Eddie Alvarez
Mean DefinitionThe "mean" is the "average" you're used to, where you add up all the numbers and then divide by the number of numbers.
Eddie Alvarez
How to find the MeanIt is easy to calculate: add up all the numbers, then divide by how many numbers there are.
Anna perales
The cost of a tank of gas at ninedifferent gas stations is shown below.What was the mean cost of a tank ofgas?Cost of Gas: $17, $18, $22, $15, $17,$16, $25, $21, and $20
25+22+21+20+18+17+17+16=1568 156= 19.4
Median definitionThe median number is the number that falls directly in the middle of the list.
Anna Perales
How to find the median
To find the median, the data should be organized into sequential order. The middle value in the sequence in the median, for example in the sequence 3,6,9, 6 would be the median.
Marco soto
3, 5, 7, 12, 13, 14, 21, 23, 23, 23, 23, 29, 39, 40, 56 .The median value of this set of numbers is 23.
Mode definitionThe "mode" is the value that occurs most often.
Marco Soto
How to find mode The number repeated most often. This list has two values that are repeated three times.
Chantz skaer
{8, 15, 19, 19, 28, 29, 35}19 appears twice, all the rest appear only once, so 19 is the mode
Kate seen 8 blue car, 15 red cars, 19 pink cars, 19 brown cars, 28 white cars, 29 green cars, and 35 black cars
Range definition
The "range" is just the difference between the largest and smallest values
Chantz skaer
How to find the rangeJust order the data from least to greatest, find the lowest and highest numbers in that set, and then subtract the lowest number from the highest number.
Mariela Ramirez
13, 18, 13, 14, 13, 16, 14, 21, 13The mean is the usual average, so:(13 + 18 + 13 + 14 + 13 + 16 + 14 + 21 + 13) ÷ 9 = 15
Referenceshttp://www.mathsisfun.com/mean.html
http://www.ask.com/web?q=what+is+median+in+math&qsrc=178&o=0&l=dir
http://www.ask.com/web?qsrc=1&o=0&l=dir&q=how+to+find+the+median&oo=0
http://www.purplemath.com/modules/meanmode.htm
http://www.purplemath.com/modules/meanmode.htm
http://www.purplemath.com/modules/meanmode.htm
http://www.ask.com/web?q=how+to+find+the+range&qsrc=0&o=0&l=dir&oo=0
Mariela Ramirez