Intro to Stats
Name something that contains statistics
Literally anything
Quantitative or Qualitative?
Brown Hair
What is Qualitative
Nominal, Ordinal, Interval, or Ratio?
Temperature
What is interval
Random, Systematic, Stratified, Cluster?
You want to select a simple random sample of 100 employees of Company X. You assign a number to every employee in the company database from 1 to 1000, and use a random number generator to select 100 numbers.
What is random
Determine the independent variable.
If I go to school, then I will get better grades
What is go to school
A characteristic or attribute that can assume different values?
What is a variable
Quantitative or Qualitative
9.8 Newtons
What is Quantitative
Nominal, Ordinal, Interval, or Ratio?
Political preferences
What is Nominal
Random, Systematic, Stratified, Cluster?
Every 8th PC is tested
What is systematic
Determine the dependent variable.
Because Tony stole my desk, he was written up
What is written up
A collection of data
What is data set
Discrete or Continuous?
Total tips after one night at a restaurant.
What is Discrete
Nominal, Ordinal, Interval, or Ratio?
Weight
Random, Systematic, Stratified, Cluster?
Every 100 vaccine is sampled for size
What is systematic
What is control group
A group of subjects picked to represent the population
What is a sample
Discrete or Continuous?
40 yard dash time for a Quarterback
Continous
Nominal, Ordinal, Interval, or Ratio?
Grades (A, B, C, D, F)
Random, Systematic, Stratified, Cluster?
Based on street, students are grouped for a competition.
What is Cluster
This type of study is when a researcher watches the population and records data
What is observational
"Based on last years data, we should see an increase of purchases for the next year" is descriptive or inferential?
What is inferential
Discrete or Continuous?
Number of students in the class.
What is discrete
Nominal, Ordinal, Interval, or Ratio?
Zip Code
Nominal
Random, Systematic, Stratified, Cluster?
Blondes and Brunets are split for a survey
What is stratified
The boundaries between 45.6
What is 45.55 - 45.65