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Statistical Data Analysis - Coggle Diagram
Statistical Data Analysis
Types of Data
determines way of
Collecting Sample Data
turns into
Frequency Distributions
which summarizes data with
Histograms, Scatterplots, Correlations, and Regression
,
shows spread
distribution
measured by
Measures of center, variation, relative standings, and boxplots
data inside these measures can turn into
Probabilities
to find all probabilities, utilize
Addition and Multiplication rule
also
Conditional Probability
but to find all probabilities, use
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Normal distribution
n>=30
equals valid
Central Limit Theorem
population divided by # of successes, generalize outcome for the population
Population Proportion
take "n" and use given confidence interval
Population Mean
estimates "u" to compare to given "u"
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Hypothesis Testing
binomial distribution, there should be two outcomes
need to have value in between two other values
z=p hat-p/pq square root/n square root
Claim about Proportion
State null Hypothesis
State alternative Hypothesis
t=x bar-u/ s/ n square root or z=x bar-u/ standard deviation
Claim about Means
chi-squared=(n-1) s squared/ standard deviation squared
Claims about Standard Deviation/Variance