Statistics Quiz

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson
Download our mobile app to listen on the go
Get App

Questions and Answers

Given the scores on a test for 5 students: 82, 77, 84, 79, 83, and a variance of 9, what is the standard deviation?

  • 3 (correct)
  • 2
  • 4
  • 5

What is the standard deviation of the weights (in pounds) of 5 corgi dogs: 28, 32, 29, 31, 33?

  • 3.16
  • 2.00
  • 1.58
  • 2.35 (correct)

The average age of everyone in the class is an example of what type of statistics?

  • Mode
  • Inferential
  • Median
  • Descriptive (correct)

As the sample size grows larger, what happens to the standard deviation?

<p>It becomes a more accurate estimate of the population (C)</p> Signup and view all the answers

As the sample size grows larger, what happens to the n-1 adjustment for the standard deviation?

<p>It has a smaller impact on the calculation (D)</p> Signup and view all the answers

Flashcards are hidden until you start studying

Study Notes

Standard Deviation

  • The standard deviation is the square root of the variance.
  • For the test scores, the standard deviation is 3 (the square root of 9).
  • For the corgi weights, the standard deviation is 2.03 (the square root of 4.12).

Descriptive Statistics

  • The average age of everyone in the class is an example of descriptive statistics, which summarizes data from a sample or population

Sample Size and Standard Deviation

  • As the sample size grows larger, the standard deviation typically decreases.
  • This means the data points are closer to the mean.

Sample Size and n-1 Adjustment

  • The n-1 adjustment for the standard deviation is used when calculating the standard deviation of a sample, not a population.
  • The adjustment helps make the standard deviation more accurate, especially when the sample size is small.
  • As the sample size increases, the n-1 adjustment becomes less significant. This is because the sample standard deviation becomes closer to the population standard deviation.

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Quiz Team

More Like This

Statistics Quiz
11 questions

Statistics Quiz

PreferableRoseQuartz avatar
PreferableRoseQuartz
Statistics Quiz 3 Flashcards
19 questions
Statistics Quiz on Data Types
16 questions

Statistics Quiz on Data Types

TriumphantJubilation157 avatar
TriumphantJubilation157
Use Quizgecko on...
Browser
Browser