Question 1

Which statement is not true concerning Sturges' Rule?

Accepted Answer

A) It proposes adding one class (bin) to the histogram for each extra observation. 
B) If you double the sample size, you should add one class. 
C) Its purpose is to tell how many classes (bins) to use in a frequency distribution. 
D) It is only a guideline and may be overruled by other considerations. 
A) It proposes adding one class (bin) to the histogram for each extra observation. 
B) If you double the sample size, you should add one class. 
C) Its purpose is to tell how many classes (bins) to use in a frequency distribution. 
D) It is only a guideline and may be overruled by other considerations.

Question 2

Briefly list strengths and weaknesses of this display. Cite specific principles of good graphs, as well as offering your own general interpretation.

Accepted Answer

Proportions are good

Question 3

The line chart is appropriate for categorical (qualitative) data.

Accepted Answer

A) True 
 B)False

Question 4

Which is not a characteristic of an effective summary table?

Accepted Answer

A) The main point should be clear within 10 seconds. 
B) Data to be compared should be displayed in rows, not columns. 
C) Data should be rounded to three or four significant digits. 
D) Use space instead of lines to separate columns. 
A) The main point should be clear within 10 seconds. 
B) Data to be compared should be displayed in rows, not columns. 
C) Data should be rounded to three or four significant digits. 
D) Use space instead of lines to separate columns.

Question 5

Excel's pyramid charts make it easier to read the data values.

Accepted Answer

A) True 
 B)False

Question 6

Which is not a tip for effective line charts?

Accepted Answer

A) Line charts are better than bar charts to display cross-sectional data. 
B) Numerical labels are omitted on a line chart if there are many data values. 
C) Omit data markers (e.g., squares, triangles) when there are many data values. 
D) Thick lines make it harder to see exact data values. 
A) Line charts are better than bar charts to display cross-sectional data. 
B) Numerical labels are omitted on a line chart if there are many data values. 
C) Omit data markers (e.g., squares, triangles) when there are many data values. 
D) Thick lines make it harder to see exact data values.

Question 7

Which data would be suitable for a pie chart?

Accepted Answer

A) Whirlpool Corporation's sales revenue for the last five years 
B) Oxnard University student category (undergraduate, masters, doctoral) 
C) Average SAT scores for entering freshmen at 10 major U.S. universities 
D) U.S. toy imports from China over the past decade 
A) Whirlpool Corporation's sales revenue for the last five years 
B) Oxnard University student category (undergraduate, masters, doctoral) 
C) Average SAT scores for entering freshmen at 10 major U.S. universities 
D) U.S. toy imports from China over the past decade

Question 8

Below is a sorted stem-and-leaf diagram for the measured speeds (miles per hour) of 49 randomly chosen vehicles on highway I-80 in Nebraska. How many vehicles were traveling exactly the speed limit (70 mph)? stem unit $ =10 $
leaf unit $ =1 $
$\begin{array}{rrl}
\text { Frequency } & \text { Stem Leaf } \
1 & 4 & 9 \
1 & 5 & 5 \
17 & 6 & 01222455556688999 \
19 & 7 & 0111233345666778999 \
7 & 8 & 0133557 \
\underline{4} & 9 & 0122 \
49 &
\end{array}$

Accepted Answer

A) 0 
B) 1 
C) 19 
D) Impossible to tell 
A) 0 
B) 1 
C) 19 
D) Impossible to tell

Which statement is not true concerning Sturges' Rule?

Briefly list strengths and weaknesses of this display. Cite specific principles of good graphs, as well as offering your own general interpretation.

The line chart is appropriate for categorical (qualitative) data.

Which is not a characteristic of an effective summary table?

Excel's pyramid charts make it easier to read the data values.

Which is not a tip for effective line charts?

Which data would be suitable for a pie chart?

Overview of Statistics

Data Collection

Descriptive Statistics

Probability

Discrete Probability Distributions

Continuous Probability Distributions

Sampling Distributions and Estimation

One-Sample Hypothesis Tests

Two-Sample Hypothesis Tests

Analysis of Variance

Simple Regression

Multiple Regression

Time Series Analysis

Chi-Square Tests

Nonparametric Tests

Quality Management

Filters

Exam 3: Describing Data Visually

Which statement is not true concerning Sturges' Rule?

Briefly list strengths and weaknesses of this display. Cite specific principles of good graphs, as well as offering your own general interpretation.

The line chart is appropriate for categorical (qualitative) data.

Which is not a characteristic of an effective summary table?

Excel's pyramid charts make it easier to read the data values.

Which is not a tip for effective line charts?

Which data would be suitable for a pie chart?

Overview of Statistics

Data Collection

Descriptive Statistics

Probability

Discrete Probability Distributions

Continuous Probability Distributions

Sampling Distributions and Estimation

One-Sample Hypothesis Tests

Two-Sample Hypothesis Tests

Analysis of Variance

Simple Regression

Multiple Regression

Time Series Analysis

Chi-Square Tests

Nonparametric Tests

Quality Management

Filters