Question 1

The number of items rejected daily by a manufacturer because of defects for the last 30 days are:
20,21,8,17,22,19,18,19,14,17,11,6,21,25,4,19,9,12,16,16,10,28,24,6,21,20,25,5,17,8
Construct a stem-and-leaf plot.

Accepted Answer

The answer of The number of items rejected daily by...

Question 2

Recently an advertising company called 200 people and asked them to identify the company that was in an ad running nationwide.They obtained the following results.  Construct a table of column percentages.

Accepted Answer

The answer of Recently an advertising company called 200 people...

Question 3

The number of items rejected daily by a manufacturer because of defects for the last 30 days are:
20,21,8,17,22,19,18,19,14,17,11,6,21,25,4,19,9,12,16,16,10,28,24,6,21,20,25,5,17,8
Complete this frequency table for these data.

Accepted Answer

The answer of The number of items rejected daily by...

Question 4

An example of manipulating a graphical display to distort reality is ___________.
A) starting the axes at zero
B) making the bars in a histogram equal widths
C) stretching the axes
D) starting the axes at zero and stretching the axes

Accepted Answer

Stretching the axes can distort the visual representation of data, making differences appear more or less significant than they actually are.

Question 5

Consider the following data on distances traveled by people to visit the local amusement park.  Construct an ogive plot that corresponds to the frequency table.

Accepted Answer

The answer of Consider the following data on distances traveled...

Question 6

Fill in the missing components of the following frequency distribution constructed for a sample size of 50.

Accepted Answer

The answer of Fill in the missing components of the...

Question 7

The number of weekly sales calls by a sample of 25 pharmaceutical salespersons is below.24,56,43,35,37,27,29,44,34,28,33,28,46,31,38,41,48,38,27,29,37,33,31,40,50
Construct an ogive plot.

Accepted Answer

The answer of The number of weekly sales calls by...

Question 8

A local electronics retailer recently conducted a study on purchasers of large screen televisions.The study recorded the type of television and the credit account balance of the customer at the time of purchase.They obtained the following results.  Construct a table of row percentages.

Accepted Answer

The answer of A local electronics retailer recently conducted a...

Question 9

The percentage of measurements in a class is called the ___________ of that class.
A) frequency
B) relative frequency
C) leaf
D) cumulative percentage

Accepted Answer

Frequency refers to the number of occurrences of a measurement in a class, while relative frequency refers to the percentage of measurements in a class compared to the total number of measurements. Leaf is a term used in the context of constructing a stem-and-leaf plot, and cumulative percentage refers to the running total of the relative frequencies up to a certain class. Therefore, the best choice is B as it directly relates to the given definition.

Question 10

The following is a relative frequency distribution of grades in an introductory statistics course.  If we wish to depict these data using a pie chart,find how many degrees (out of 360 degrees)should be assigned to each grade.

Accepted Answer

The answer of The following is a relative frequency distribution...

Question 11

The following is a relative frequency distribution of grades in an introductory statistics course.  Construct a percent frequency bar chart for this data.

Accepted Answer

The answer of The following is a relative frequency distribution...

Question 12

The following is a relative frequency distribution of grades in an introductory statistics course.  If this was the distribution of 200 students,give the frequency distribution for this data.

Accepted Answer

The answer of The following is a relative frequency distribution...

Question 13

A very simple graph that can be used to summarize a quantitative data set is called a(n)___________.
A) runs plot
B) ogive plot
C) dot plot
D) pie chart

Accepted Answer

A dot plot is a clear and concise graph that displays the distribution of a quantitative variable in a dataset. It shows the frequency of each value or range of values by placing a dot above the corresponding value on a number line. Runs plots and ogive plots are more complex and not as appropriate for summarizing simple datasets. Pie charts are best used for displaying parts of a whole, not quantitative data.

Question 14

A relative frequency curve having a long tail to the right is said to be ___________.
A) skewed to the left
B) normal
C) a scatter plot
D) skewed to the right

Accepted Answer

A long tail to the right indicates that there are fewer observations with high values and more with lower values, causing the curve to be skewed to the right.

Question 15

Consider the following data.  Create a stem-and-leaf display for the sample.

Accepted Answer

The answer of Consider the following data.  Create a...

Question 16

Recently an advertising company called 200 people and asked them to identify the company that was in an ad running nationwide.They obtained the following results.  Construct a table of row percentages.

Accepted Answer

The answer of Recently an advertising company called 200 people...

Question 17

The number of items rejected daily by a manufacturer because of defects for the last 30 days are:
20,21,8,17,22,19,18,19,14,17,11,6,21,25,4,19,9,12,16,16,10,28,24,6,21,20,25,5,17,8
Construct an ogive plot.

Accepted Answer

The answer of The number of items rejected daily by...

Question 18

A histogram that tails out toward smaller values is ___________.
A) skewed to the left
B) normal
C) a scatter plot
D) skewed to the right

Accepted Answer

A histogram that tails out towards smaller values is skewed to the left, also known as negatively skewed. This means that the majority of the data is on the right side of the histogram, and there are fewer occurrences of smaller values on the left side.

Question 19

A local electronics retailer recently conducted a study on purchasers of large screen televisions.The study recorded the type of television and the credit account balance of the customer at the time of purchase.They obtained the following results.  Construct a table of column percentages.

Accepted Answer

The answer of A local electronics retailer recently conducted a...

Question 20

A histogram that tails out toward larger values is ___________.
A) skewed to the left
B) normal
C) a scatter plot
D) skewed to the right

Accepted Answer

A histogram that tails out toward larger values is skewed to the right.

Quiz 2: Descriptive Statistics: Tabular and Graphical Methods

The number of items rejected daily by a manufacturer because of defects for the last 30 days are: 20,21,8,17,22,19,18,19,14,17,11,6,21,25,4,19,9,12,16,16,10,28,24,6,21,20,25,5,17,8 Construct a stem-and-leaf plot.

Recently an advertising company called 200 people and asked them to identify the company that was in an ad running nationwide.They obtained the following results. Construct a table of column percentages.

The number of items rejected daily by a manufacturer because of defects for the last 30 days are: 20,21,8,17,22,19,18,19,14,17,11,6,21,25,4,19,9,12,16,16,10,28,24,6,21,20,25,5,17,8 Complete this frequency table for these data.

An example of manipulating a graphical display to distort reality is ___________.

Consider the following data on distances traveled by people to visit the local amusement park. Construct an ogive plot that corresponds to the frequency table.

Fill in the missing components of the following frequency distribution constructed for a sample size of 50.

The number of weekly sales calls by a sample of 25 pharmaceutical salespersons is below.24,56,43,35,37,27,29,44,34,28,33,28,46,31,38,41,48,38,27,29,37,33,31,40,50 Construct an ogive plot.

A local electronics retailer recently conducted a study on purchasers of large screen televisions.The study recorded the type of television and the credit account balance of the customer at the time of purchase.They obtained the following results. Construct a table of row percentages.

The percentage of measurements in a class is called the ___________ of that class.

The following is a relative frequency distribution of grades in an introductory statistics course. If we wish to depict these data using a pie chart,find how many degrees (out of 360 degrees)should be assigned to each grade.

The following is a relative frequency distribution of grades in an introductory statistics course. Construct a percent frequency bar chart for this data.

The following is a relative frequency distribution of grades in an introductory statistics course. If this was the distribution of 200 students,give the frequency distribution for this data.

A very simple graph that can be used to summarize a quantitative data set is called a(n) ___________.

A relative frequency curve having a long tail to the right is said to be ___________.

Consider the following data. Create a stem-and-leaf display for the sample.

Recently an advertising company called 200 people and asked them to identify the company that was in an ad running nationwide.They obtained the following results. Construct a table of row percentages.

The number of items rejected daily by a manufacturer because of defects for the last 30 days are: 20,21,8,17,22,19,18,19,14,17,11,6,21,25,4,19,9,12,16,16,10,28,24,6,21,20,25,5,17,8 Construct an ogive plot.

A histogram that tails out toward smaller values is ___________.

A local electronics retailer recently conducted a study on purchasers of large screen televisions.The study recorded the type of television and the credit account balance of the customer at the time of purchase.They obtained the following results. Construct a table of column percentages.

A histogram that tails out toward larger values is ___________.