Topic 19: Confidence Intervals with Means
Symbols
s sample standard deviation (true variance)
- range of values for true population mean
x - sample average mean
Used when sampling distribution of a s
Topic 1:
Statistics- the science of reasoning from data to reach an inference Data- collected samples of
information
Observational Units Objects described by a set of data (people, animals, entity mak
Topic 12: Normal Distributions: How to use a Z-table
How to write that a variable has a normal distribution: X ~
(, 2)
Z-distribution on a Z-curve (represents probabilities)
o find the probability tha
Rowvariab
le
Ch. 6 Two way tables use when looking for a link between 2 variables (probability & distribution)
Have explanatory and response variables (ex. Gender and highest degree obtained)
Highest
Measures of Spread:
FNS:
Outliers- observations thatbetween largest
Modified boxplots:
-Range: difference are far away from
Min, max, median, LQ, UQ
data
-Identify for boxplot
and smallest value inout