Intro to Normal Distribution

Flashcard
•
Mathematics
•
10th - 12th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a normal distribution?
Back
A normal distribution is a probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean.
2.
FLASHCARD QUESTION
Front
What are the key characteristics of a normal distribution?
Back
1. Symmetrical shape. 2. Mean, median, and mode are all equal. 3. The total area under the curve is 1. 4. Approximately 68% of data falls within one standard deviation of the mean.
3.
FLASHCARD QUESTION
Front
What does the mean represent in a normal distribution?
Back
The mean is the average value of the dataset and is the center point of the normal distribution.
4.
FLASHCARD QUESTION
Front
What does the standard deviation indicate in a normal distribution?
Back
The standard deviation measures the dispersion or spread of the data points around the mean.
5.
FLASHCARD QUESTION
Front
What percentage of data falls within one standard deviation of the mean in a normal distribution?
Back
Approximately 68%.
6.
FLASHCARD QUESTION
Front
What percentage of data falls within two standard deviations of the mean in a normal distribution?
Back
Approximately 95%.
7.
FLASHCARD QUESTION
Front
What percentage of data falls within three standard deviations of the mean in a normal distribution?
Back
Approximately 99.7%.
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