AP Statistics Review 1

Question 1

Number of strokes are displayed on a dot plot. Which of the following best describe the type of variables for the data?

Accepted Answer

Quantitative and discrete

Question 2

How would you describe the distribution of a data when the mean and very close to the median?

Accepted Answer

Normal distribution

Question 3

What is the lower quartile of the recorded hours of sleep of the following students: 3, 4, 5, 5, 6, 7, 7, 8, 9, 9.

Accepted Answer

5

Question 4

Which of the following is a Quantitative variable?

Accepted Answer

total cost of the cone

Question 5

Which of the following is the best way to represent and compare 2 different dataset?

Accepted Answer

side-by-side bar chart

Question 6

In a normal distribution, mean is 35 and St Dev is 5. Find the Z-scores for 33 and 38.

Accepted Answer

-0.4 and 0.6

Question 7

Which of the following variables for data about a track team is a discrete variable?

Accepted Answer

number of times that a team member finished first in a race

Question 8

Summary statistics: N(45), Mean(43), St Dev(12), Min(20), Q1(33), Median(44), Q3(53), and Max(65). What is IQR?

Accepted Answer

20

Question 9

In a normal distribution, mean is 35 and St Dev is 5. What is the probability between 33 and 38. Use Normal cdf.

Accepted Answer

0.3811

Question 10

What is the inter-quartile range (IQR) of the recorded hours of sleep of the students: 3, 4, 5, 5, 6, 7, 7, 8, 9, 9, 9

Accepted Answer

4

Question 11

Color/Frequency: Red(15), Blue(30), Green(8), Yellow(12), and Purple(25). Which of the following support the given data?

Accepted Answer

Twice as many students chose blue than red

Question 12

How would you describe the shape of the distribution of the data with a strong outlier to the left?

Accepted Answer

Skewed to the left

Question 13

What is the upper quartile of the recorded hours of sleep of the following students: 3, 4, 5, 5, 6, 7, 7, 8, 9, 9, 9

Accepted Answer

9

Question 14

The recorded hours of sleep of the following students: 3, 4, 5, 5, 6, 7, 7, 8, 9, 9, 9. Is there an outlier?

Accepted Answer

False

Question 15

What rule do you use to determine an outlier?

Accepted Answer

1.5 IQR

Question 16

Data are collected on the 35 students in a college history course. Which of the following is NOT a variable?

Accepted Answer

Student political affiliation

Question 17

Summary statistics: N(45), Mean(43), St Dev(12), Min(20), Q1(33), Median(44), Q3(53), and Max(65). Is there an outlier?

Accepted Answer

False

Question 18

How would you describe the shape of the distribution of the data with a strong outlier to the right?

Accepted Answer

Skewed to the right

Question 19

Relative Frequencies deal with proportions.

Accepted Answer

True

Question 20

Summary statistics: N(45), Mean(43), St Dev(12), Min(20), Q1(33), Median(44), Q3(53), and Max(65). Is this symmetrical?

Accepted Answer

Yes

Questions 20