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Transcript of Statistics
Purpose of Stats
It is used to gather, organize and analyze data. This information is used to present data in research papers and make inferences about data.
Why this topic?
Hypothesis and Experimentation
Graphs and Equations
Bell Curve Anatomy
What does the data mean?
5 Number Summary
Min = smallest number in the set
Q1= Middle number between min and Q2
Median (Q2)= the middle number of the set
Q3= Middle number between Q2 and Max
Max = largest number in the set
Z - Score
Statistics is a branch of applied mathematics that scientists use to plan research.
Mean- average of the numbers
Variance- the average of squared differences from the mean
Standard deviation- measure of how spread out numbers are
From our Facebook survey data, we can conclude that the majority of people check their Facebook 2-3 times an hour.
Statistics...What is it?
Relative Frequency- how often something
happens divided by all outcomes.
Z-Score- indicates how many standard deviations an element is from the mean
Example questions used in survey:
2-3 times an hour? lets say thats 15 minutes a day
at 365 days a year
....2,190 hours .
In this time you could learn how to fly
and fly around the world 48 times.