STATS

STATS

1. DATA

   • collecting data
     • observational studies
       • correlation
     • expirements
       • hypothesis
       • treatments
       • control/placebo
       • lurking variables
         • blocking
     • sample
       • cluster
       • muli-stage
       • simple-random
         • representitve
           • undercoverage bias
           • nonresponse bias
       • stratefied
   • summarizing
   • vizualizing
     • quantitative
       • histograms
         • shape
           • skew
         • center
           • mean
           • median
             • robust to outliers
               • outliers
         • spread
           • IQR
             • 5 # summary
               • min/max
           • standard deviation
       • scatterplot
       • barplot
       • boxplots
       • dotplot
     • categorical
       • mosiac plot
       • barplot
       • contingency tables
         • margin
         • conditional distributions
         • marginal distributions
   • types of data
     • catagorical
       • nominal
       • ordinal
     • quantitative
       • discrete
       • continuous
     • organization
       • labels
       • case