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Statistics (Mean (7, 10, 16 7+10+16=33 33/2+11, Step 1: add numbers Step…
Statistics
Mean
7, 10, 16 7+10+16=33 33/2+11
Step 1: add numbers
Step 2: divide sum by number of addens
only use mean if the data has no extreme values
Median
1,2,3,4,5=3 middle number
the median is the middle number
there should be no big gaps in the middle of the data
Mode
1,2,2,3,3,3,4,4,4,4,5,5,5,5,5 = 5 Most popular
The most popular number
only use it it if the data has A LOT of repeating values
Sistical Questions
How old is the kids in my class
Make a question that could use a lot of data
Quartiles
use the median to divide the ordered data set into two halves.If there are a odd number of data points in the original data set.The lower quartile value is the median of the lower half of the data.
histograms
a histogram is a representation of how many times different
Range
3,6,7,9,10 = 3,10 3-10=3
Is the distance between
Box plots
1.calculate the quartile values.2.calculate the quartile differences.3.create a stacked column chart.4.convert the stacked column chart to a box plot.
