STAB23H3 Lecture Notes - Lecture 3: Aspirin, Stratified Sampling, Sampling Bias
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Asian), religion (christianity, islam, judaism), social class (upper, middle, lower), etc: affiliation to political parties, do you support same-sex-marriage? (yes, no) Sample x1, x2 x10: gpa of 10. Inference x = (x1+x2 . +x10)/10 (sample students in sample. Hispanic, asian, other), hair colour (black, brown, grey, Conservative, ndp, bloc, green, other) etc: ordinal: categorical variables w/ names for categories for which categories can be ordered (can be ordered; ordinal order, ex: social class (upper, middle, lower), letter grade (a, b, c , Education (no education, high school and diploma, university. Income (person a earns 20 000 cad more than person b), exam. Grade (student a scored 30 marks more than student b: note: categorical variables not interval b/c there is no defined distance b/w levels. Which of the following variables are continuous when the measurements are as fine as possible: age of mother. A: continuous: number of children in family. A: continuous: latitude and longitude of cities.
