Binary, Independent, Number of trials is fixed, Same probability

What is the difference between binomial and geometric distributions?

Binomial must have a fixed number of trials

What is the normal approximation to a binomial distribution?

np and nq both greater than or equal to 10

When is the Pythagorean theorem for stats used?

When event X and event Y are independent

What is the correct interpretation of the expected value for a fair 6-sided die?

In many number of rolls, we expect to see an average of 3.5 dots on top.

What is the definition and formula for variance?

Average Standard Deviation Squared; σ2

When is it appropriate to use a geometric distribution to calculate the probability of a basketball player making a FT?

The player makes the FT on the 3rd attempt

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Unit 4 Part 2 Review

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Questions 15

Answers

1
The center of a binomial distribution is np
True
False
2
What is BINS?
Binary, Independent, Number of trials is fixed, Same probability
Binary, Inconclusive, Fixed trials, Same probability
Binding, Independent, Fixed trials, Same probability
Binary, Independent, Nothing, Sandwich
3
What is the complement of probability A?
The set of all possible outcomes
Both Red and yellow
1 - P(A)
All outcomes not in the desired event A
4
What is the difference between binomial and geometric distributions?
Both red and blue
All of the above
Geometric must have a fixed number of trials
Binomial must have a fixed number of trials
5
What is the normal approximation to a binomial distribution?
np and nq both greater than or equal to 100
np and nq both greater than or equal to 2
np and nq both greater than or equal to 1
np and nq both greater than or equal to 10
6
What is the shape of a binomial distribution?
Always right skewed
It depends on the probability
Always normal
Always left skewed
7
When is the Pythagorean theorem for stats used?
When event X and event Y are dependent
When event X and event Y are independent
When event X and event Y are disjoint
When event X and event Y are mutually exclusive
8
What is the correct interpretation of the expected value for a fair 6-sided die?
In many number of rolls, we expect to see an average of 3.5 dots on top.
3.5
There are an average of 3.5 dots on a die.
We expect to see an average value of 3.5 dots on the top face of the die.
9
When multiplying/dividing all the values in a dataset by a constant, the standard deviation remains the same.
False
True
10
What is standard deviation?
A measure of spread
Both red and blue
The typical distance of data values away from the mean
None of the above
11
What is the definition and formula for variance?
Average Standard Deviation Squared; σ1/2
Average Standard Deviation Square Rooted; σ2
Average Standard Deviation Squared; σ2
Average Standard Deviation Square Rooted; σ1/2
12
The shape of a geometric distribution is always left skewed.
False
True
13
What is the center of a geometric distribution?
1/p
1
1/(p-1)
1/q
14
When is it appropriate to use a geometric distribution to calculate the probability of a basketball player making a FT?
The player makes the FT on the 3rd attempt
None of the above
The player makes 2 or less out of 10
Out of 5, the player makes at least 3
15
What is the formula for a geometric distribution?
(1 + p) * (p)n-1
(1-p) * (p)n+1
(1-p)n-1 * (p)
(1-p) * (p)

Unit 4 Part 2 Review Flashcards | StudBud