Statistics Summative Bonus Point Flashcardizz
Flashcard
•
Mathematics
•
7th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a sample in statistics?
Back
A sample is a subset of a population used to represent the entire group. It is selected to gather information and make inferences about the population.
2.
FLASHCARD QUESTION
Front
What does it mean for data to meet a requirement?
Back
Data meets a requirement when it satisfies specific criteria or standards set for analysis, such as quality or performance.
3.
FLASHCARD QUESTION
Front
How do you calculate the interquartile range (IQR)?
Back
The interquartile range (IQR) is calculated by subtracting the first quartile (Q1) from the third quartile (Q3). IQR = Q3 - Q1.
4.
FLASHCARD QUESTION
Front
What is the purpose of surveying a sample?
Back
Surveying a sample helps to gather insights and preferences from a smaller group to make predictions about a larger population.
5.
FLASHCARD QUESTION
Front
If 15 out of 50 students prefer cotton candy, what is the proportion of students who prefer cotton candy?
Back
The proportion is 15/50 = 0.3 or 30%.
6.
FLASHCARD QUESTION
Front
What is a population in statistics?
Back
A population is the entire group of individuals or items that you want to study or draw conclusions about.
7.
FLASHCARD QUESTION
Front
What is the significance of random selection in surveys?
Back
Random selection ensures that every individual has an equal chance of being chosen, which helps to eliminate bias and makes the sample representative.
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