Population/Sample
True or false
population is a subset, or part
False
The 1275 students who accepted admission to Academia University in 2016 had an average SAT score of 1356.
Parameter or Sample Statistic
Explain:
Parameter
Why? It is based on the entire
population.
Fill in the blanks and give an example.
The branch of statistics that involves the
_____, ______, and _____of data.
organization, summarization, and display
Qualitative data consists of attributes, labels, or ______ entries.
nonnumerical
Nominal
Qualitative only, categorized using ____, or ____
No mathematical computations can be made at this level.
names labels, qualities
What is the definition of Population?
Collection of all outcomes, responses, measurements, or counts that are of interest
What is the definition of a Statistic?
Numerical description of a sample characteristic
Fill in the blanks and give an example.
The branch of statistics that involves using a ____ to draw _____about a ______. A basic tool in the study of inferential statistics is probability.
sample, conclusion, population
Quantitative data consists of _______
measurements or counts.
numerical
Ordinal
Qualitative or Quantitative, can be arranged in ___ or____, but differences between entries are not meaningful.
order, ranked
Number of Computers in each U.S House Hold?
Population or Sample
Population
What is the definition of Parameter?
Numerical description of a population characteristic
A study of180 people with severe epilepsy found that they scored around 20% higher on a memory test if they got deep brain stimulation while they slept.
What part of the study represents the descriptive branch of statistics?
What conclusion might be drawn using inferential statistics?
-180 people with severe epilepsy scored around 20% higher on a memory test if they got deep brain stimulation while sleeping
-Brain stimulation while sleeping is associated with better memory.
Which column shows qualitative data?
City Population
New York, NY 8,491,079
Los Angeles, CA 3,928,864
Houston, TX 2,239,558
citys
Interval
Can be ___ and_____ differences can be calculated.
A zero entry represents a position on a scale.
ordered, meaningful
In a recent survey, 5115 adult members of the American Trends Panel (ATP) were asked how the government is doing at the U.S. Mexico border. One thousand one hundred seventy-six people said they felt the government was doing a good job.
Population:
Sample:
Sample data set:
population: all adult members of ATP
Sample: 5115 adults of ATP
Sample data set: 1176 good, 3939 not good job
A recent survey of 200 college career centers reported that the average starting salary for electrical engineers is $80,550. (Source: Bureau of Labor and Statistics)
Population:
Sample:
Does the numerical data represent a population parameter OR sample statistic? How do you know?
Population: Responses of all college career centers.
Sample: 200 college career centers
population parameter OR sample statistic? How do you know? Sample Statistic of average starting salary at $80,550 because it is based on data collection from a sample of the population.
A survey of 5,200 American adults revealed that 41% agree that the U.S. government needs to focus on climate change policy.
What part of the study represents the descriptive branch of statistics?
What conclusion might be drawn using inferential statistics?
41% of the 5,200 adults surveyed believe the U.S. government should focus on climate change policy
Answers will vary. Adults in the U.S. have divided opinions about government climate change policy.
Determine whether the data are qualitative or quantitative. Explain your reasoning.
player numbers for a
softball team
Quantitative
Has to deal with Numbers
_____ is similar to the interval level, data values can be formed so that one data value can be meaningfully expressed as a multiple of another.
A zero entry is an inherent zero and implies “none”.
Ratio
In a recent survey, 2800 fifth graders in the United States were asked if they play video games daily. Three hundred twelve of them said yes.
Population:
Sample:
What does the sample data consist of:
population: all 5th graders
Sample: 2,800 5th graders
Consist of: 312 yes, 2,488 no
A recent survey of 200 college career centers reported that the average starting salary for electrical engineers is $80,550. (Source: Bureau of Labor and Statistics)
Population:
Sample:
Does the numerical data represent a population parameter OR sample statistic? How do you know?
Population: Responses of all college career centers.
Sample: 200 college career centers
Does the numerical data represent a population parameter OR sample statistic? How do you know? Sample Statistic of average starting salary at $80,550 because it is based on data collection from a sample of the population.
A survey of 10,700 adults found that 45% of participants have a lot of confidence in their own health care provider to give an accurate picture of the health benefits and risks of vaccines.
What part of the study represents the descriptive branch of statistics?
What conclusion might be drawn using inferential statistics?
-45% of the 10,700 adults surveyed have a lot of confidence in their own health care provider regarding vaccine information
-Less than half of adults are confident in the accuracy of the vaccine information provided by their health care provider
length of songs on a
playlist
Qualitative
The daily average low temperatures for Juneau, Alaska for a week in January.
23.9° 24° 23.6° 23.8° 24.1° 23.5° 23.8°
Nominal Ordinal Interval Ratio
Ordinal