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Math 221 Three Week Knowledge Check Flashcards | StudBud
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Math 221 Three Week Knowledge Check
Math 221 Three Week Knowledge Check
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1
A distribution containing a few extremely small values is likely to create a distribution that is:
Uniform
Normal.
Positively skewed (right)
Negatively skewed (left)
2
The science of statistics includes which of the following:
Presenting data
Organizing data
All of the these
Interpreting data
3
Can the following table be a probability distribution
Yes
Not enough information
No
4
The probability that someone prefers Math over English is an example of:
Subjective Probability
Emprical Probability
Classical probability
A lie: No one prefers Math over English
5
If you rolled a 6-sided dice, what is the probability of rolling a 2 given you have rolled an even number?
\frac{3}{6}
100%
\frac{1}{6}
\frac{1}{3}
6
Which of the following are examples of continuous variables?
Distance between tollbooths on the New Jersey Turnpike
Number of balls in the pick 6 lotto game
How many languages a person can speak
Number of students in the class
7
Binomial or Not?
yes
no
8
There are 3 red, 4 blue, 3 green balls in a bag. What is the Probability of getting 2 red (without replacement)?
30%
6%
6.67%
10%
9
In descriptive statistics our main objective is to:
Describe the population
Infer something about the population
Describe the data we collected
Compute an average
10
Which of the following statements is true regarding a population?
It is a collection individuals, objects, or measurements
It must refer to people
None of the above
It must be a large number of values
11
A discrete variable:
Can assume only whole number values
Can assume only certain clearly separated values
has infinite outcomes
Cannot be negative
12
A number from 1 to 10 is chosen at random. What is the probability of choosing a 6 or an even number?
0%
60%
50%
100%
