Intro to Stats
What is statistics(singular)?
is the science of collection, organizing, and interpreting data.
Quantitative or Qualitative?
Brown Hair
What is Qualitative
Nominal, Ordinal, Interval, or Ratio?
Temperature
What is interval
what type of sampling method: 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 such as democratic or republican
What is Nominal
Random, Systematic, Stratified, Cluster?
Every 15th 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
What is Ratio
Random, Systematic, Stratified, Cluster?
Every 100 vaccine is sampled for size
What is systematic
This type of group received a placebo.
What is control group
A subset of a population from where the data is obtained.
What is a sample
Discrete or Continuous?
Length of time it takes to run a mile
Continous
Nominal, Ordinal, Interval, or Ratio?
Grades (A, B, C, D, F)
What is ordinal
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 Codes
Nominal
Random, Systematic, Stratified, Cluster?
FEDEX and UPS employees are split for a survey
What is stratified
occurs because of random and inherently unpredictable events in the measurement process.
What is a random error