Question 1

The 18 faculty members in a college math department range in age from 32 to 68. A stemplot follows:   The median age of the faculty members is:

Accepted Answer

A) 39 years. 
B) 45 years. 
C) 47.5 years. 
D) 49 years. 
A) 39 years. 
B) 45 years. 
C) 47.5 years. 
D) 49 years.

Question 2

A violin student records the number of hours she spends practicing during each of nine consecutive weeks:   What is the median number of hours spent practicing per week during this period?

Accepted Answer

A) 6.15 hours 
B) 5.76 hours 
C) 6.20 hours 
D) 8.40 hours 
A) 6.15 hours 
B) 5.76 hours 
C) 6.20 hours 
D) 8.40 hours

Question 3

The 18 faculty members in a college math department range in age from 32 to 68. A stemplot follows:   The 1.5 × IQR rule would identify an age as a high outlier if it exceeded:

Accepted Answer

A) 19 years. 
B) 28.5 years. 
C) 77 years. 
D) 86.5 years. 
A) 19 years. 
B) 28.5 years. 
C) 77 years. 
D) 86.5 years.

Question 4

Which of the following sets of four numbers has the smallest standard deviation?

Accepted Answer

A) 7, 8, 9, 10 
B) 5, 5, 5, 6 
C) 0, 0, 10, 10 
D) 0, 1, 2, 3 
A) 7, 8, 9, 10 
B) 5, 5, 5, 6 
C) 0, 0, 10, 10 
D) 0, 1, 2, 3

The 18 faculty members in a college math department range in age from 32 to 68. A stemplot follows: The median age of the faculty members is:

A violin student records the number of hours she spends practicing during each of nine consecutive weeks: What is the median number of hours spent practicing per week during this period?

The 18 faculty members in a college math department range in age from 32 to 68. A stemplot follows: The 1.5 × IQR rule would identify an age as a high outlier if it exceeded:

Which of the following sets of four numbers has the smallest standard deviation?

Getting Started

Picturing Distributions With Graphs

The Normal Distributions

Scatterplots and Correlation

Two-Way Tables

Producing Data- Sampling

Producing Data- Experiments

Data Ethics

Introducing Probability

General Rules of Probability

Binomial Distributions

Inference for Regression

One-Way Analysis of Variance- Comparing Several Means

Nonparametric Tests

More on Analysis of Variance

Filters

Exam 3: Describing Distributions With Numbers

The 18 faculty members in a college math department range in age from 32 to 68. A stemplot follows: The median age of the faculty members is:

A violin student records the number of hours she spends practicing during each of nine consecutive weeks: What is the median number of hours spent practicing per week during this period?

The 18 faculty members in a college math department range in age from 32 to 68. A stemplot follows: The 1.5 × IQR rule would identify an age as a high outlier if it exceeded:

Which of the following sets of four numbers has the smallest standard deviation?

Getting Started

Picturing Distributions With Graphs

The Normal Distributions

Scatterplots and Correlation

Two-Way Tables

Producing Data- Sampling

Producing Data- Experiments

Data Ethics

Introducing Probability

General Rules of Probability

Binomial Distributions

Inference for Regression

One-Way Analysis of Variance- Comparing Several Means

Nonparametric Tests

More on Analysis of Variance

Filters