Vocabulary
The shape of the graph of a normal distribution is this.
What is bell-shaped?
A normal distribution has a mean of 15 and a standard deviation of 3. The value that is 3 negative standard deviations away from the mean is this.
What is 6?
The percentage of data located within 1 standard deviation of the mean.
What is 68%
P(x ≤ μ)
What is 0.5?
Dotplots, stemplots, histograms, boxplots, and scatterplots all can be used to show the distribution of this type of variable.
What is quantitative variables?
The mean of a standard normal distribution is this.
What is zero?
A normal distribution has a mean of 24 and a standard deviation of 6. 68% of the values of this distribution fall between what two data values?
What is 18 and 30?
These percentages roughly represent the percent of the data values that fall within one, two, and three standard deviations from the mean of a normal distribution.
What is 68–95–99.7%?
P(x ≥ μ)
What is 0.5?
When you use the mean to describe the center of a distribution, measure variability using this.
What is standard deviation?
The greek symbol used to represent standard deviation.
What is sigma (lower case) ?
A normal distribution has a mean of 8 and a standard deviation of 2. The value that is 2 positive standard deviations away from the mean is this.
What is 12?
The total area under the curve of a normal distribution is this.
What is one?
P(μ − σ ≤ x ≤ μ)
What is 0.34?
When you use the median to describe the center of a distribution, measure its variability using this.
What is interquartile range?
What is another name for the normal curve?
What is Bell curve?
A normal distribution has a mean of 100 and a standard deviation of 10. The percentage of data values that fall between the values of 70 and 90 is this.
What is 15.85?
This measure of central tendency of a normal distribution represents the highest point on the curve
What is the mean?
P(μ ≤ x ≤ μ + 2σ)
What is 0.475?
Correlation r measures these two things.
What is strength and direction?
The greek symbol used to represent the mean.
What is the greek letter Mu or μ?
A normal distribution has a mean of 10 and a standard deviation of 1. The percentage of data values that fall between the values of 8 and 12 is this.
What is 95%?
What percent are outliers in a normal distribution?
What is around 0.3%?
P(x ≤ μ − 3σ)
What is 0.0015?
Bar charts, pie charts, and segmented bar charts all can be used to display the distribution of this type of variable.
What is categorical variables?