1000 students take a test. Pete receives a 63, which is in the 73rd percentile. This means

did better than about 73% of the test takers

Are the data normally distributed and why?

No they're not, the curvature and outliers show that

Who did better and why?

Gina—her standardized score is higher than Colleen’s.

Which of the following is not correct about a standard Normal distribution?

The proportion of scores that satisfy z > −3.0 is 0.9938

studbud

Duplicate of AP Stat Chapter 2

10 termsStudBud Administration26 plays

Imported from external platform

Flashcards10 cardsFPractice quizPHost liveL

Questions 10

Answers

1
A cumulative relative frequency graph, what percent of these adults consume between 4 and 8 oz?
80%
40%
20%
50%
2
1000 students take a test. Pete receives a 63, which is in the 73rd percentile. This means
did worse than about 73% of the test takers
did better than about 73% of the test takers
did better than about 63% of the test takers
did worse than about 63% of the test takers
3
What is the z-score?
.27
.13
-.27
-.13
4
Heights of a pop follow a Normal dist and 99.7% have heights between 5ft & 7ft what is the s.d.
4 feet
6 feet
1 foot
3 feet
5
Are the data normally distributed and why?
Yes they are, the curvature shows that
No they're not, the grouping is too close together
Yes they are, the grouping shows that
No they're not, the curvature and outliers show that
6
Who did better and why?
Gina—her standardized score is higher than Colleen’s.
Gina—the standard deviation was bigger in 2013.
Colleen—she scored 30 points higher than Gina.
Colleen—her standardized score is higher than Gina’s.
7
The figure shown is the density curve of a distribution. Which statement is true?
The area between A and G is 1
The 3rd quartile of the distribution is D
The mean of the distribution is E
The median of the distribution is C
8
Which of the following is not correct about a standard Normal distribution?
The proportion of scores that satisfy z
The proportion of scores that satisfy z
The proportion of scores that satisfy z > 2.0 is 0.0228
The proportion of scores that satisfy z > −3.0 is 0.9938
9
What is the standard deviation of the distribution?
5.18
8.93
6.04
4.83
10
What are the new mean and standard deviation?
5.40, 1.32
5.40, 1.44
5.64, 1.44
5.64, 1.32

Duplicate of AP Stat Chapter 2 Flashcards | StudBud