Sample vs. Population / Parameter vs. Statistic
Determine whether the data set is a population or a sample:
78% of all US adults said they won't give their toddler a tablet
population
The number of votes for best drama show of the year
Quantitative
True or False:
Nominal and Ordinal levels of measurement can both be quantitative data.
False, Nominal is always qualitative.
Identify the method of data collection used:
Ms. Dice wanted to show the 40 students in her class her favorite animal which was between zebra and giraffe but she couldn't decide so she wanted the class opinion. She found that 20 students like zebras better.
Survey
What sampling methods is used?
Asking every third person in a line what their favorite color is.
Systematic
The annual Royal Christmas charity ball invited 8000 guests. Only 3500 RSVP after the Queen's Speech at the castle. What is the Sample?
a. the 8000 guests invited
b. the 3500 guests attending
c. Every person in the country
b. the 3500 guests attending
The table below shows the average retail price of the most up to date hype sneakers when they first release. Specify the qualitative and the quantitative data.
SHOE Average Retail Price
Jordan 1 $170
Jordan 4 $200
Jordan 11 $185
Jordan 12 $190
Dunk Low $100
Dunk high $110
Yeezy 350 $220
Qualitative - Shoe Name
Quantitative - Average Retail Price
Identify the level of measurement for the data set:
Number of Takis that were sold today and yesterday
Ratio
Identify the method of data collection used:
A study of the effect on the human body when eating sour candy.
Experiment
Identify the sampling technique used:
As students leave the university library, a researcher asks them about their drinking habits.
Convenience Sample
A city council member wanted to know how citizens felt about a new planned city park. She randomly selected 75 names from the city phone directory and conducted a phone survey.
Identify the sample and population in this setting.
Sample - 75 people in the survey
Population - all of the people in the phone directory
The Top 3 foods at McDonalds are the Big Mac, Happy Meal, and Big Breakfast. Is this Qualitative or Quantitative data?
Qualitative
Identify the level of measurement for the data:
The top five most read books in the library are Harry Potter and the Deathly Hallows, The Hunger Games, Divergent, Al Capone Does My Shirts, and The Diary of a Young Girl.
Ordinal
What method of data collection would you use to obtain this data?
The favorite type of cake of everyone taking Statistics at Pritzker
Survey
Identify the sampling technique used:
Chicago is grouped in 4 different sides, the West Side of Chicago is asked how many times do you see police cars patrolling the streets.
Cluster Sample
Identify the sample and the population:
A survey of 250 high school students at Pritzker College Prep found that 80% of students prefer having indoor lunch than outdoor lunch.
Sample - 250 high school students surveyed
Population - all high schoolers at Pritzker College Prep
Is the following data qualitative or quantitative:
The color of all the sweaters in a closet
Qualitative
True or False:
Hair color of students at school is nominal
True
What type of data collection would be used for this study?
A test to see if a roller coaster is safe enough for people to ride.
Simulation
Identify the sampling technique used:
Ms. Dice shared to the class that she will bring candy tomorrow and so she told everyone to put their suggestions in a little piece of paper and fold it and put in the hat then she shook the hat and grabbed one. It was m&ms.
Simple Random Sample
Identify (a)Population, (b)the sample, and (c) the data set
In a recent survey, 1500 teens in the US were asked if they thought social media is a good thing. 862 of those teens said yes.
a. All teens in the US
b. 1500 teens in the survey
c. consists of 862 yes's and 638 no's
Which data is qualitative and which is quantitative?
Chicago has a population of 2.7 million and New York has a population of 20.4 million
Qualitative - name of city
Quantitative - population
Identify the level of measurement for the data:
March Madness is a basketball tradition and each of the teams are placed onto a list.
Ordinal
Identify the method of data collection used:
Since Hurricanes are common occurrences, a city wants to know if new windows developed will stand against the harsh winds, debris, and water.
Simulation
Identify the sampling technique used:
20 people are divided into categories of Math and English with 10 people in each group, and 10 are selected from the Math section.
Cluster