| Vocabulary!! | Graphs and Equations!!! | All about Density Curves and Normal Distribution!!!!!!! | Chapter 2 extra funnnn!!! |
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What is mu and sigma
The greek name for μ and σ is...
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What is a density curve
This has an area of exactly 1 underneath
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What is 68-95-99.7 Rule
In the normal distribution __% of the observations fall within 1 standard deviation, __% fall within 2, __% fall within 3. This is known as the ___ rule.
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What is plot a graph and analyze it on the calculator
To asses the normality we often do this...(hint)it involves what some refer to as an "xbox"
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What is measures the range of plausible values
A confidence interval does what
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What is: in between, left, and right
Which way will you shade on the graph for these examples? -1.5
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What is 68-95-99.7 Rule
The empirical rule is also known as the ____
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What is: the center, shape (skewed left/right), spread, outliers
When something asks you to describe the distribution what things will you usually use in this description?
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What is the point at which the steepness of the fall changes
An inflection point is
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What is stem and leaf plot
This type of graph can also be characterized as something commonly seen on trees
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What is z = (45 - 52)/5 = -1.40
Fred was recently diagnosed with Alzheimer's disease and is asked to take a cognitve abilities test. He scores a 45 on the test with a mean of 52 and standard deviation of 5. What is this Fred's percentile rank?
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What is symmetric and bellshaped
A normal distribution is often characterized by being these two things...
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What is the pattern
A density curve describes the ____ of a distribution
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What is a boxplot
This graph is produced by using the median, lower and upper quartiles, and max and min
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What is 34%: draw a density curve and use 65-97-99.7 rule
Suppose 300 crates of poisonous snakes are being shipped. The mean weight of the crates is 301 lbs with a standard deviaton of 11 lbs. What percent of the crates will contain between 290 and 301 lbs of snakes
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What is -3.4 and 3.4
What is the highest and lowest z-score value on our table?
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What is z-score
___ tells how mant standard deviations the original observation falls away from the mean
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What is z=(x-μ)/σ
This equation is used to find a z-score
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What is 63 inches
The heights of Swedish women aged 18 to 24 are approximately distributed with mean 63
inches and standard deviation 2.5 inches. Half of all Swedish women are shorter than |
What is the percent of observations falling within k standard deviations of the mean is at least (100)(1- (1/k^2))
What is Chebyshev's inequality?
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