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Statistics Chapters 1-5 Flashcards | StudBud
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Statistics Chapters 1-5
Statistics Chapters 1-5
20 terms
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Answers
1
What are the 2 types of random Variables?
Quantitative and Qualitative
Discrete or continuous
2
What is the median?
The value that lies in the middle of the data when the data set is ordered.
The sum of the lower and upper limits of the class divided by two.
3
Classical probability is used when each outcome in a sample space is equally likely to occur.
False
True
4
Solve. 9p5
60,480
15,120
630
3,024
5
What should the sum of realtive frequencies be?
0
1 or 100%
6
Find the indicated probability. A) Find P(3) when p= 0.65
0.080
1.3
0.053
1.95
7
A Population is the collection of all outcomes.
False
True
8
The z- score is a statistical measurement that shows how many standard deviation a value is from the mean
True
False
9
What does “Ơ” represent
Probability
Standard Deviation
Mean
Median
10
Solve. Mean= 172 Standard Deviation= 20 P(x<170)
0.4207
132.5
0.5643
161.4
11
What formula is this?
Z- Score
Standard Deviation
Mean
12
What is a mutually exclusive event?
All of the Above
A and B cannot occur at the same time
A and B have no outcome in common
13
Determine the missing probability for the probability distribution.
0.34
0.64
0.58
0.28
14
Statistics is the science of collecting, organizing, analyzing, and interpreting data in order to make decisions.
False
True
15
A) Number the sample B) The location of the greatest increase in frequency.
A) 75 B) 158.5 - 201.5
A) 80 B) 244.5 - 287.5
A) 80 B) 158.5 - 201.5
A) 75 B) 244.5 - 287.5
16
Determine whether the data are Qualitative or Quantitative. Data: Student ID numbers
Quantitative
Qualitative
17
A card is selected at random from a deck of 52 play cards. Find the probability. A) Randomly selecting a 9 or face card.
0.327
0.308
0.288
0.231
18
Solve. Standard deviation= 2.9 Mean= 64.2 / What is the 95th percentile?
72.56
68.97
19
What are the two types of data?
Nominal and Continuous
Qualitative and Quantitative
20
What is a midpoint?
The value that lies in the middle of the data when the data set is ordered.
The sum of the lower and upper limits of the class divided by two.
