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Statistics/Data Analysis22 ((Line Plots ((Gather your data. Your data will…
Statistics/Data Analysis22
Central Tendency
Mean
Example : 15 + 13+12+11+10=61 divided +12.2
Step one:Is to find to take all the numbers and add them and take the addians and divide
Mode
examples The mode of {4{4left brace, 4, 222, 444, 333, 222, 2}2}2, right brace is 222 because it occurs three times, which is more than any other number.
Example:
Step one- Arrange the numbers in order from least to greatest Step two- Find the number that is repeated the most
Median
Example: 3,4,5,6,7,8,9
The answer would be 6 cause it is the number in the middle
Step one- Arrange the numbers in order from least to greatest Step two- Find the middle number Step three- if there are two middle numbers, find the mean of those two numbers
Range
step 2. arrange the numbers from least to greatest
Example: 1,2,3,4,5,6 so one would be the lowest and 6 would be the highest and you would -1 from 6 and get 5
step one is try and find fing what the the highest and lowest number is
Line Plots
Gather your data. Your data will be comprised of the frequency with which a certain act or event occurs within a given set of people or things. ...
Organize your data in numerical order.
Create a horizontal line. ...
Mark an "X" above the horizontal line every time the data occurs. ...
Interpret the data.
Below is an example of a line plot showing the distance 171717 turtles traveled in an hour (we know it is 171717 turtles because there are 171717 dots on the line plot).
The 333 dots above 212121 mean that 333 turtles traveled a distance of 212121 meters in an hour.
Statistical Questions
Box Plots
find surtitles
Complete the five-number summary by finding the min and the max.
find the median
Scale and label an axis that fits the five-number summary.
step1 order the numbers from least to greatest
examples
Draw a whisker from Q_1Q
1
Q, start subscript, 1, end subscript to the min and from Q_3Q
3
Q, start subscript, 3, end subscript to the max.
Draw a box-and-whisker plot for the data set {3, 7, 8, 5, 12, 14, 21, 15, 18, 14}.
From the Example 2 on the previous page, we had the five-number summary:
Minimum: 3, Q1: 7, Median: 13, Q3: 15, and Maximum: 21.
Histograms
step 2 on the horizontal axis place the lower value of each interval
step 3 draw a bar extending from the lower value of each interval.
step 1 on the vertical axis place a frequency
I.Q.R.
step 1
Step 1: Put the numbers in order. ...
Step 2: Find the median. ...
Step 3: Place parentheses around the numbers above and below the median. Not necessary statistically, but it makes Q1 and Q3 easier to spot. ...
Step 4: Find Q1 and Q3. ...
Step 5: Subtract Q1 from Q3 to find the interquartile range.
M.A.D.
step 1
find the mean (average)
find the difference between each data value and the mean.
take the absolute value of each difference.
find the mean (average) of these differences.
find the difference between each data value and the mean.
take the absolute value of each difference.
find the mean (average) of these differences.