Probability
Random Stats
Vocabulary
Rules
Tables & Graphs
100
In a class with 200 seats that have folding arm tablets, 30 of them are designed for left-handed individuals. Typically, the size of the class 188, with 13% of the students being left-handed. What is the probability that a right-handed student in one of the classes has to use a left-handed tablet?
Vaca says .053
100
A variable that is measured on a numeric scale would be considered _____.
Vaca says Quantitative
100
The term used to define the number of standard deviations away from the mean.
Vaca says Z-Score.
100
The _____ condition guarantees that the data values are numerical as opposed to categorical.
Vaca says the Quantitative Variable Condition
200
James Harden has made 80% of his free throws during the season. With the free throws being independent, what is the probability that in the game tonight he will miss for the frst time on his 5th attempt?
Vaca says 0.0819
200
The ______ gives us a numerical measurement of the strength of linear relationships between explanatory and responsive variables.
Vaca says Correlation Coefficient
200
One must apply the _______ condition when faced with unusual values that vary significantly from the trend on a graph.
Vaca says the Outlier Condition
200
What graph is the best way to observe association between two connotative variables?
Vaca says Scatterplots
300
A research was conducted that observed more than 21,000 children in various locations. 21% of children younger than 5 yrs-old were not sitting in car seats as recommended. What is the probability that researchers found their first unrestrained child 5 yrs-old or younger by the 5th car they checked?
Vaca says 0.692
300
A football kicker has made 81% of his field goals during this season. Find the expected number of kicks until he misses, given that each kick is independent from each other.
Vaca says 5.26
300
The term used to describe the difference between the observed value and the predicted value is called _____.
Vaca says the Residual
300
The _________ states that an area occupied by part of a graph should correspond to the magnitude of the value it represents.
Vaca says Area Principle
400
An insurance company records indicate 12% of teenagers have been ticketed for speeding and 9% for going through a stop sign. If 4% have been ticketed for both, what is the probability that a teenage driver has been issued a ticket for speeding, but not for running through a stop sign.
Vaca says -8%
400
Hours spent shopping:5,10,4,6,10,9 Money Spent:64,86,69,86,59,87 Find the correlation (r).
Vaca says 0.224
400
While variables that are ______, have no outcomes in common, variables that are considered _____, have outcomes that do not impact each other.
Vaca says disjoint,independent
400
How many conditions are necessary when analysing any graph possessing quantitative variables?
Vaca says 3
500
A consumer organization estimated 29% of new cars have cosmetic defects once delivered to car dealers. Also, they believe that 7% of new cars have functional defects and 2% of new cars have both defects. What is the probability a new car you buy has some kind of defect?
Vaca says 0.34 or 34%
500
Mean=12.2, 13.87% above 14.1. What is the standard deviation?
Vaca says 1.76
500
According to the ____, a certain outcome is ______, solely because it is statistically possible.
Vaca says the Law of Averages, inevitable/unavoidable
500
While the _______ rule can be applied to events that are disjoint and have no outcomes in common, the ______ rule can be applied to two events that are independent of each other.
Vaca says Addition Rule, Multiplication Rule
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