Seasonal Population Patterns: An Analysis of Consumption Trends and Population Statistics, Cheat Sheet of Business Statistics

Download Seasonal Population Patterns: An Analysis of Consumption Trends and Population Statistics and more Cheat Sheet Business Statistics in PDF only on Docsity! Seasonal pattern (tính mùa vụ)- Trend,more substitue --> decrease in amount are bought- Affect consumption: weather, preferences, habit, income, ages, gender, occupation,population (include all elements of interest) - Lai chau province: 470,510 - --> population size "N"(qui mô tổng thể) --> population mean ( ) (average income) (trung bình tổng thể) A population parameter Take statistic from local government --> not correct (government usually take it higher cuz they don’t want everyone think them poor)  Ask citizens --> Investigate a group of people (random sample) sample size: 300 observations (select 1 sample, in that sample we have 300 observations)○ Sample mean○ (a sample statistic)  Obs Income (x) 1 .. 2 … … … 300 … Population mean and sample mean are never equal It is only equal when sample size=population size Immediate boss ( hành vi, nét mặt,…)-- >data Statistics (unc): thống kê học A Statistic ©: con số thống kê Investment groups Interest rate 20%/month bank Interest rate 8%year Log in internal website of company Put requirements --> web calculate Base on amount of time seniors have done the job Descriptive statistics ( thống kê mô tả) refers to the collection, organization, presentation, and summary of data (either using charts and graphs or using a numerical summary). • Inferential statistics (thống kê suy diễn) refers to generalizing from a sample to a population, estimating unknown population parameters (tham số), drawing conclusions, and making decisions. Proactive : anticipate problems--> avoid it happen Reactive: sth happened--> fix CHAP 1 Saturday, September 10, 2022 2:07 PM New Section 1 Page 1