STAT 200 Lecture Notes - Lecture 1: Continuous Or Discrete Variable, Qualitative Property, Pie Chart
Document Summary
Descriptive statistics: pie chart, bar chart, dot plot, histogram, stem and leaf, frequency table, relative frequency table, two way table, mean, median, deviation. Inferential statistics: consists of methods for drawing and measuring the reliability of conclusions about a population based on information obtained. Population: the collection of all individuals or items under consideration in a statistical study. Sample: the part of the population from which information is obtained. Two types of statistical study: observational: researchers observe but do not attempt to influence or modify them, experiment: researchers apply some treatment and observe the effects. Variable: characteristic that varies form one person or thing to another. Qualitative variable: non-numerically valued variable (examples: blood type or name) Quantitative variable: numerically valued variable (examples: number of siblings in a family, number of students, or number of viewers for a film) Discrete variable: a quantitate variable whose possible value can be listed.
