30 Questions
What is the branch of math that deals with collecting, organizing, interpreting, and presenting data?
Statistics
Which term refers to a method of gathering information about a specific group of items or individuals?
Survey
What is defined as the collection of all data of interest?
Population
In statistics, what term refers to a part of the population being studied?
Sample
What is an unbiased sample in statistics?
A sample that is selected at random and is large enough to provide accurate data
What introduces bias in a sample in statistics?
The way in which the data are collected from the sample
In Example 1, why is the sample biased?
It only includes students from one class
In Example 2, why is the sample unbiased?
The birds were randomly selected and tagged
In Example 3, which sample would be unbiased for a survey of different colors of leaves seen in September?
50 fallen leaves and 50 leaves on branches
In Example 4, why is the sample unbiased for estimating the number of 9th grade students that walk home right after school in the spring time?
Every fifth student from an alphabetical list of the 9th graders
What classification is given to the survey method in Example 1?
'Systematic' as every 50th person on a list was selected
What type of survey method was used in Example 2 to track migration patterns of a particular species of bird?
'Random' as birds were randomly tagged
What type of survey method was used in Classifying a Sample Example 1?
Systematic
What type of survey method was used in Classifying a Sample Example 1?
Systematic
What is the distinction between population and sample fundamental to in statistics?
Selecting a representative sample for accurate inference
Why is it important for a sample to be unbiased in statistics?
To ensure all parts of the population are represented equally
What defines an unbiased sample in statistics?
Selected at random and provides accurate data
How is bias introduced in a sample in statistics?
By favoring certain parts of the population over others
In statistics, what is an unbiased sample selected for?
Accurate inference about the entire population
What does an unbiased sample ensure in statistics?
Equal representation of different demographics
In Example 2, what is the population being studied?
The specific species of bird being studied
In Example 1, why is the sample biased?
It does not represent the entire population of the state voters
What introduces bias in a sample?
Flawed selection method or high nonresponse rate
In statistics, what term refers to a part of the population being studied?
Sample
What type of survey method was used in Example 3 to survey different colors of leaves seen in September?
Simple random sampling
What is defined as the collection of all data of interest?
Census
What type of survey method was used in Classifying a Sample Example 1 for contacting registered voters?
Systematic sampling
What type of survey method was used to track migration patterns of a particular species of bird?
'Simple random sampling'
What classification is given to the survey method in Example 1 for contacting registered voters?
Systematic sampling
What branch of math deals with collecting, organizing, interpreting, and presenting data?
Statistics
Test your understanding of basic vocabulary in statistics, including concepts such as population, sample, and surveys. Explore your knowledge of collecting, organizing, interpreting, and presenting data.
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