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Duplicate of Review Chapters 1-5 Flashcards | StudBud
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Duplicate of Review Chapters 1-5
Duplicate of Review Chapters 1-5
20 terms
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Questions
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Answers
1
If the sample size is at least 30, then you can use z-scores to determine the probability
True
False
2
How do you know whether a data set is population or a sample?
Depending on the situation
By dividing something
You cant
3
A combination is an ordered arrangements of objects
False
True
4
Conditional Probability
Half of the sum
The sum of everything
The probability of an event occurring
5
When are two events independent?
when one event has the less amount then the other
When they are equal to eachother
When one event doesn’t affect the other
6
What consists of information coming from observation, counts, measurement, or response?
Data
Replication
List
7
As the sample size increases, the standard deviation increases
True
False
8
The sum of the frequencies of a class and all previous classes
Cumulative frequency
Relative Frequency
Frequency
9
The mean of the random variable of a probability distribution describes how the outcome varies
False
True
10
What is permutation?
The area around the shape
The area in the shape
Ordered arranmeant of objects
11
Are the the numerical descriptions of population and sample “Parameter and statistic
True
False
12
What is the sum of the lower and upper limits of the class divided by two?
Beginning point
Endpoint
Midpoint
13
What is statistics?
Math
collectin, organizing, analyzing, and interpreting data
exact facts
14
What are used in a frequency histogram?
Lines
Shapes
Bars
15
A sampling distribution is normal only when the population is normal
False
True
16
The two types of data sets are called “ Populations and Samples
True
False
17
The portion or percentage of the data in a class Is Relative Frequency
False
True
18
What is a frequency distribution?
When there’s a problem in the question
The number goes up
Table that shows classes or intervals
19
How can events be mutually exclusive?
When the occur at the same time
When they don’t occur at the same time
When two events lower at the same time
20
For a random variable x, the word random indicates that the value of x is determined by chance
False
True
