Intro to Stats
Level of Measurements
(nominal, ordinal, interval, ratio)
(nominal, ordinal, interval, ratio)
Sampling Techniques (random, cluster, convenience, systematic, stratified)
Data Collection (observe, simulate, survey, experiment)
Statistics
100
Population or Sample: the salaries of each member of the NBA
Population
100
Years that a TV show won the Emmy for best comedy series
Interval
100
Every 100th customer at Chris's Ice Cream gets a free ice cream cone.
Systematic
100
Effects of music on drivers between the ages of 17-25
observe
100
Find the median for the data set:
12 ,8, 9, 22, 36, 4
10.5
200
Population or Sample: a survey of 300 people from an auditorium with 13,000 people
Sample
200
The top ten business schools in the US for a recent year according to Forbes.
Ordinal
200
A survey is taken using an Instagram poll.
Convenience
200
Researchers demonstrated that adults exercising more lowers blood pressure
Experiment
200
Calculate the z-score: x is 62, the mean is 56, and the standard deviation is 4
1.5
300
Parameter or Statistic: the average salary is for 45 of engineers is $72,000 at a company of 1,000 people
Statistic
300
The lengths (in minutes) of songs from a Spotify playlist.
Ratio
300
A computer generates phone numbers for sales calls.
Random
300
What type of music does our stats class like more pop or hip hop?
Survey
300
The mean monthly utility bill for a sample of households is $70 with a standard deviation of $8. Between what 2 values do about 95% of the data lie?
$54 and $86
400
Parameter or Statistic: 62 of the 97 passengers aboard the Hindenburg airship survived its explosion
Parameter
400
The top ten fictions books on The New York Times Best Seller List
Ordinal
400
Soybeans are planted on a 48 acre field. The field is divided into one-acre subplots. A sample is taken from each sub-plot to estimate the harvest.
Stratified
400
How to know if the new airbag design will keep drivers safe?
Simulation
400
What is the mode for the number of pets in the chart below?
1
500
Qualitative or Quantitative: the colors of dresses worn to prom by senior girls
Qualitative
500
The four departments of a printing company are listed: administration, sales, production, billing
Nominal
500
Garfield Heights wants students' opinions on school lunches, so they ask our statistics class for their opinion.
Cluster
500
Calling residents of Garfield Heights and asking how confident they are in the American economy
Survey
500
The scores and percents of the final grade for a statistics class are show below. What is the student's score?
Quizzes score: 100, weight 20%
Midterm score: 89, weight 30%
Participation score 100, weight 10%
Final exam score: 92, weight 40%
93.5%