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Terms in this set (25)
A ________ is the organization of raw data in table form, using classes and frequencies.
(125-131) What is the first number called?
Lower class limit
(125-131) What is the second number called?
Upper class limit
Class midpoint= (____ + ____)/2
______ (uniform) is the difference between any 2 consecutive LCL or any two consecutive UCL.
(T/F) You cannot leave a class out in a frequency distribution- even if it is empty.
(T/F) Class width must be uniform for all classes.
(T/F) In a frequency distribution, classes are allowed to overlap.
(T/F) You can omit classes when forming a frequency distribution.
Even though you frequency table may be set up incorrectly, what is one thing you can still calculate?
The total number of frequencies
If it does not specify how many classes to have, what do you do?
It is up to you to decide the number
In order to calculate the number of classes necessary, what do you do?
Calculate your range
(Highest Value - Lowest Value)
Select number of classes desired
Range/Desired Class Number= Class Width
Relative frequency= ______/_____ * 100
What does the summation symbol mean to do?
In a histogram, the bars ____.
When drawing a histogram, you must still depict what?
Any "0" frequencies
What is a histogram for qualitative data called?
We must always begin at the ____- if not data is misleading.
What does right skewed data look like on a chart?
What does left skewed data look like on a chart?
What does a normal curve look like displayed on a chart?
When determining how data is skewed, look for the ____.
When making a stem and leaf plot, if there is no leaves on a stem don't do what two things?
Do not skip the class
Do not insert a zero
In a Pareto chart, arrange the data on your graph from _____ to _____
High to low
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