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statistics science of collecting tabulating organizing analyzing and predicting and drawing
descriptive collection tabulating organization presenting
inferential prediction drawing conclusion
quantitative discrete 1,2,3,4....
quantitative continuos age hight weight faction numbers
qualitative transcription of conversation, type of car gender race
variable charechteristics that can assume different values
random variables variable that are determined by chance
data values the variables assume
nominal ex gender,race,country, it has no order
ordinal you can put in order non numerical grades judging ppl 1st 2nd 3rd...
interval theres no true 0 so ratios are meaningless ex: sat scores temperture, IQ score
ratio can be ranked diffrence are meaningful and theres a true 0
systmatic sampeling every nth person
Created by: 1326163209