Question 1

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 2

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

Accepted Answer

A) Frequency 
B) Relative frequency 
C) Leaf 
D) Cumulative percentage

Question 3

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

Accepted Answer

A) Skewed to the left 
B) Normal 
C) A scatter plot 
D) Skewed to the right

Question 4

Using the following data,what would be the leaf unit in a stem-and-leaf display?

Accepted Answer

A) 1.0 
B) 10 
C) .1 
D) .01 
E) .2

Question 5

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
How many classes should be used in constructing a histogram?

Accepted Answer

A) 6 
B) 5 
C) 7 
D) 4 
E) 8

Question 6

Math test anxiety can be found throughout the general population.A study of 116 seniors at a local high school was conducted.The following table was produced from the data.Complete the missing parts.

Accepted Answer

The answer of Math test anxiety can be found throughout...

Question 7

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 8

A runs plot is a form of scatter plot.

Accepted Answer

A) True 
 B)False

Question 9

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 10

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.  What percentage of purchases were plasma televisions by customers with the smallest credit balances?

Accepted Answer

A) 50.00 
B) 39.20 
C) 56.30 
D) 34.80 
E) 19.60

Question 11

Row or column percentages can be found in

Accepted Answer

A) Frequency tables. 
B) Relative frequency tables. 
C) Cross-tabulation tables. 
D) Cumulative frequency tables.

Question 12

The general term for a graphical display of categorical data made up of vertical or horizontal bars is called a(n)___________.

Accepted Answer

A) Pie chart 
B) Pareto chart 
C) Bar chart 
D) Ogive plot

Question 13

Recently an advertising company called 200 people and asked them to identify the company that was in an ad running nationwide.The following results were obtained.  What percentage of those surveyed could not correctly recall the company?

Accepted Answer

A) 58.00 
B) 56.89 
C) 55.00 
D) 43.10 
E) 42.00

Question 14

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 15

A stem-and-leaf display is a graphical portrayal of a data set that shows the overall pattern of variation in the data set.

Accepted Answer

A) True 
 B)False

Question 16

Which one of the following graphical tools is used with quantitative data?

Accepted Answer

A) Bar chart 
B) Histogram 
C) Pie chart 
D) Pareto chart

Question 17

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 18

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
What is the shape of the distribution of the data?

Accepted Answer

A) Skewed with tail to the right 
B) Skewed with tail to the left 
C) Normal 
D) Bimodal

Question 19

A histogram that tails out toward larger values is ___________.

Accepted Answer

A) Skewed to the left 
B) Normal 
C) A scatter plot 
D) Skewed to the right

Question 20

Using the following data,describe the shape of the data distribution.

Accepted Answer

A) Skewed to the left 
B) Bimodal 
C) Normal 
D) Skewed to the right

Exam 2: Descriptive Statistics: Tabular and Graphical Methods

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.

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

Using the following data,what would be the leaf unit in a stem-and-leaf display?

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 How many classes should be used in constructing a histogram?

Math test anxiety can be found throughout the general population.A study of 116 seniors at a local high school was conducted.The following table was produced from the data.Complete the missing parts.

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 runs plot is a form of scatter plot.

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.

Row or column percentages can be found in

The general term for a graphical display of categorical data made up of vertical or horizontal bars is called a(n) ___________.

Recently an advertising company called 200 people and asked them to identify the company that was in an ad running nationwide.The following results were obtained. What percentage of those surveyed could not correctly recall the company?

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 stem-and-leaf display is a graphical portrayal of a data set that shows the overall pattern of variation in the data set.

Which one of the following graphical tools is used with quantitative data?

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 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 What is the shape of the distribution of the data?

A histogram that tails out toward larger values is ___________.

Using the following data,describe the shape of the data distribution.