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Probability & Statistics Review: Chapter 1 Flashcards | StudBud
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Probability & Statistics Review: Chapter 1
Probability & Statistics Review: Chapter 1
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#statistics #review #chapter1
Flashcards
40 cards
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Practice quiz
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Host live
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Questions
40
Answers
1
Vocabulary: The study of collecting, organizing, analyzing, and interpreting data.
statistics
convenience sampling
census
population
2
A variable that is not being studied but influences the result of the study is ....
Confounding Variable
Lurking Variable
3
Level of Measurement:
Qualifying times at the race were recorded: 5min, 4 min 45sec.
Ordinal
Nominal
Ratio
Interval
4
Vocabulary: Examples of this include hair color and Homebase teacher.
quantitative variable
statistic
parameter
qualitative variable
5
This type of variable has a value or numerical measurement.
Qualitative
Quantitative
6
MOST APPROPRIATE Data Collection:
Effects of a category 5 hurricane.
Simulation
Experiment
Census
Sampling
7
Level of Measurement:
Data was collected about students' weights: 150 lbs, 97 lbs, 220 lbs
Nominal
Ordinal
Ratio
Interval
8
True or False:
Sampling error implies an error (possibly small) made by the surveyor.
False
True
9
True or False:
A placebo would be used in this experiment.
True
False
10
What is the
control group
in this situation?
The fireflies kept in continuous light.
The fireflies exposed to normal light/dark.
There isn't one.
The entire population of fire flies.
11
Trivia:
What is a rhinoceros' horn made of?
Cartilage
Keratin (Hair)
Rhinoceros
Bone
12
MOST APPROPRIATE Data Collection:
Guests must choose an entrée at a formal dinner.
Experiment
Simulation
Census
Sampling
13
Read the scenario. What is the
variable
?
the survey
the newspaper
the newspaper reader
the news format
14
Sampling Technique:
3 ages are randomly selected. All students with these ages are surveyed.
Convenience
Cluster
Simple Random
Stratified
15
Trivia:
If Barbie were life-sized and in proportion to her doll size, how tall would she be?
A ginormous 7'2" (taller than Shaq!)
A healthy 5'9"
Taller than most of guys at 6'6"
a not too shabby 6' Even!
16
Vocabulary: The effects of this type of variable cannot be distinguished from the effects of another.
quantitative variable
qualitative variable
lurking variable
confounding variable
17
MOST APPROPRIATE Data Collection:
Effects of sunscreen are tested.
Experiment
Simulation
Sampling
Census
18
Vocabulary: The people or objects included in a study.
parameter
statistic
variable
individuals
19
Is the variable
qualitative
or
quantitative
?
Qualitative
Quantitative
20
Level of Measurement:
Prizes were given at a music competition. 1st, 2nd, 3rd, 4th, 5th
Interval
Ratio
Nominal
Ordinal
21
Level of measurement:
Class start times: 8:10am, 9:30am, 2:45pm
Ordinal
Nominal
Interval
Ratio
22
Vocabulary: Examples of this include GPA and weight.
quantitative variable
population
sample
qualitative variable
23
Vocabulary: A group of individuals sharing some common features that might affect an experiment.
placebo
block
treatment group
control group
24
MOST APPROPRIATE Data Collection:
A guidance counselor needs to know students' credit hours.
Census
Sampling
Simulation
Experiment
25
Starting with
row 2, column 3
: what is the first number between 0 and 300?
213
100
757
75
26
Vocabulary: A numerical measure that describes an aspect of a sample.
census
parameter
qualitative
statistic
27
Sampling Technique:
50 students each flip a coin. All students that flip tails are surveyed.
Cluster
Stratified
Simple Random
Convenience
28
People forgot to turn in your survey. This is an issue of...
interviewer influence
truthfulness
nonresponse
faulty recall
29
Level of measurement: Scores on a recent test -- 97, 84, 68
Interval
Nominal
Ordinal
Ratio
30
Which form of data collection is being described?
Observational Study
Experiment
None of the above
Simulation
31
In a medical study, which of the following would
NOT
make for a good block?
Gender
Physical Activity
Hair Color
Age
32
Sampling Technique:
Every 25th toy on an assembly line is quality checked.
Stratified
Simple Random
Systematic
Cluster
33
Sampling Technique:
50 people at a local restaurant were surveyed about an upcoming election.
Systematic
Simple Random
Stratified
Convenience
34
Level of Measurement:
Data was collected about last names: Smith, Jones, Green
Nominal
Ordinal
Interval
Ratio
35
What is the difference between a parameter and a statistic?
A statistic is data for everyone, parameter is population
A statistic is for a population, a parameter is for a sample
A statistic is for a sample, a parameter is for a population
A statistic is for some, a parameter is for a sample.
36
Vocabulary: A survey issue. Individuals with strong feelings about a subject are more likely to respond.
vague wording
hidden bias
interviewer influence
voluntary response
37
Level of Measurement:
Temperatures for the last month were recorded -- 90ºF, 87ºF, 92ºF
Ratio
Nominal
Ordinal
Interval
38
Vocabulary: A survey issue. Words such as "often" or "some" mean different things to different people.
hidden bias
vague wording
voluntary response
interviewer influence
39
Sampling Technique:
5 students from each homebase are given a survey to complete.
Cluster
Simple Random
Convenience
Stratified
40
MOST APPROPRIATE Data Collection:
Students are asked about tutorial lab hours.
Simulation
Census
Experiment
Sampling
