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Topic 1 Statistical Analysis

STUDY
PLAY
Statistics
The science of data
Data
information, in the form of facts or figures obtained from experiments or surveys, used as a basis for making calculation or drawing conclusions
2 Types of Data
Qualitative and Quantitative
Qualitative
Information that relates to characteristics or descriptions
Example of Qualitative data
Species of plant, type of insect, shades of color, rank of flavor in taste testing
Can qualitative data be scored and evaluated with numbers?
Yes
Quantitative Data
measured using naturally occurring numerical scale
Example of Qualitative Data
Chemical concentration, temperature, length, wight
mode
value that appears most frequently
median
when all data are listed from least to greatest, the value at which half of the observations are greater, and half or lesser
mean
the most commonly statistic use to measure of central tendency
Standard deviation
statistic that tells you how tightly packed all the various examples are clustered around the mean in a set of data
Causation and Correlation
correlation does not imply causation