
Understanding Normal Distribution Concepts

Interactive Video
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Mathematics
•
9th - 12th Grade
•
Hard

Patricia Brown
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary purpose of smoothing over histograms with density curves?
To convert the data into a normal distribution
To eliminate outliers from the data
To make the data look more appealing
To simplify calculations by ensuring the area under the curve equals one
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the significance of the area under a density curve?
It indicates the skewness of the data
It shows the range of the data
It must equal one to represent a probability distribution
It represents the total number of data points
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In a normal distribution, which measures of central tendency are equal?
Median and mode
Mean and mode
Mean, median, and mode
Mean and median
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What percentage of data falls within one standard deviation of the mean in a normal distribution?
99.7%
95%
68%
50%
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does a z-score represent in a standard normal distribution?
The probability of an event occurring
The average of the data set
The number of standard deviations a data point is from the mean
The sum of all data points
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is a z-score calculated?
By dividing the mean by the standard deviation
By subtracting the mean from the data point and dividing by the standard deviation
By adding the mean to the data point and dividing by the standard deviation
By multiplying the data point by the standard deviation
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does a p-value represent in the context of a normal distribution?
The total area under the curve
The standard deviation of the distribution
The mean of the distribution
The probability of observing a certain outcome or one more extreme
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