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statistics
vocab
Question | Answer |
---|---|
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 |