Question 1

If the mean is greater than the median,the distribution is likely to be negative or left skewed.

Accepted Answer

A) True 
 B)False

Question 2

In a set of numerical data,the value for Q3 can never be smaller than the value for Q1.

Accepted Answer

A) True 
 B)False

Question 3

Instruction 3-1
Health care issues are receiving much attention in both academic and political arenas. A sociologist recently conducted a survey of citizens over 60 years of age who have no private health insurance. The ages of 25 uninsured senior citizens were as follows:
60, 61, 62, 63, 64, 65, 66, 68, 68, 69, 70, 73, 73, 74, 75, 76, 76, 81, 81, 82, 86, 87, 89, 90, 92
-Referring to Instruction 3-1,what type of shape does the distribution of the sample appear to have?

Accepted Answer

slightly p

Question 4

Instruction 3-1
Health care issues are receiving much attention in both academic and political arenas. A sociologist recently conducted a survey of citizens over 60 years of age who have no private health insurance. The ages of 25 uninsured senior citizens were as follows:
60, 61, 62, 63, 64, 65, 66, 68, 68, 69, 70, 73, 73, 74, 75, 76, 76, 81, 81, 82, 86, 87, 89, 90, 92
-Referring to Instruction 3-1,calculate the standard deviation of the ages of the uninsured senior citizens correct to the nearest hundredth of a year.

Accepted Answer

The answer of Instruction 3-1
Health care issues are receiving much...

Question 5

Summary measures which are not influenced by extreme values,are called _____________ .

Accepted Answer

The answer of Summary measures which are not influenced by...

Question 6

According to the Chebyshev rule,at least what percentage of the observations in any data set are contained within a distance of 2 standard deviations around the mean?

Accepted Answer

A)  95% 
B)  67% 
C)  75% 
D)  88.89% 
A)  95% 
B)  67% 
C)  75% 
D)  88.89%

Question 7

Instruction 3-4
The ordered array below represents the number of cargo manifests approved by customs inspectors at the Port
of Brisbane in a sample of 35 days.
16, 17, 18, 18, 19, 20, 20, 21, 21, 21, 22, 22, 22, 22, 23, 23, 23, 23, 24, 24, 24, 25, 25, 26, 26, 26, 27, 28, 28, 29, 29, 31, 31, 32, 32
Note: For this sample, the sum of the observations is 838, the sum of the squares of the observations is 20,684, and the sum of the squared differences between each observation and the mean is 619.89.
-Referring to Instruction 3-4,the arithmetic mean of the customs data is_____________ .

Accepted Answer

The answer of Instruction 3-4
The ordered array below represents the...

Question 8

As a general rule,an observation is considered an extreme value if its Z score is greater than -3.

Accepted Answer

A) True 
 B)False

Question 9

The interquartile range is not sensitive to extreme values.

Accepted Answer

A) True 
 B)False

Question 10

The coefficient of variation is a measure of central tendency in the data.

Accepted Answer

A) True 
 B)False

Question 11

Certain rules can be applied when calculating the quartiles.Which of the following is NOT true about these rules.

Accepted Answer

A)  If the result is a fractional half, then the quartile is equal to the mean of the corresponding ranked values. 
B)  If the result is an intger, then the quartile is equal to the ranked value. 
C)  If the result is neither an integer nor a fractional half, round the result to the nearest integer and select that ranked value. 
D)  None of the above. 
A)  If the result is a fractional half, then the quartile is equal to the mean of the corresponding ranked values. 
B)  If the result is an intger, then the quartile is equal to the ranked value. 
C)  If the result is neither an integer nor a fractional half, round the result to the nearest integer and select that ranked value. 
D)  None of the above.

Question 12

Instruction 3-6
The rates of return of an Internet Service Provider over a 10 year period are:
10.25%, 12.64%, 8.37%, 9.29%, 6.23%, 42.53%, 29.23%, 15.25%, 21.52%, -2.35%.
-Referring to Instruction 3-6,what is the shape of the distribution for the rate of return?

Accepted Answer

The answer of Instruction 3-6
The rates of return of an...

Question 13

Instruction 3-2
The data below represents the amount of grams of carbohydrates in a serving of breakfast cereal in a sample of 11 different servings.
11, 15, 23, 29, 19, 22, 21, 20, 15, 25, 17
-Referring to Instruction 3-2,the range in the carbohydrate amounts is _____________ grams.

Accepted Answer

The answer of Instruction 3-2
The data below represents the amount...

Question 14

The rate of return for Microsoft's stock over a seven year period is 0.527,0.145,0.684,1.146,0.564,0.883 and 0.436.The geometric mean rate of return is _____________ .

Accepted Answer

The answer of The rate of return for Microsoft's stock...

Question 15

The interquartile range is a measure of central tendency.

Accepted Answer

A) True 
 B)False

Question 16

Instruction 3-5
The rate of return of a listed Australian company over the past 15 years are:
3.17%, 4.43%, 5.93%, 5.43%, 7.29%, 8.21%, 6.23%, 5.23%, 4.34%, 6.68%, 7.14%, -5.56%, -5.23%, -5.73%, -10.34%.
-Referring to Instruction 3-5,what is the range of the rate of return?

Accepted Answer

The answer of Instruction 3-5
The rate of return of a...

Question 17

Instruction 3-3B
The stem-and-leaf display below represents the number of vitamin supplements sold by a health food store in a sample of 16 days.
 $$\begin{array} { | l | l | } 
\hline \text { Stem } & \text { Leaves } \
\hline 1 \mathrm { H } & 99 \
\hline \text { 2L } & 0023 \
\hline \text { 2H } & 567 \
\hline \text { 3L } & 034 \
\hline \text { 3H } & 568 \
\hline \text { 4L } & 1 \
\hline
\end{array}$$
-Referring to Instruction 3-3B,what type of shape does the distribution of the sample appear to have?

Accepted Answer

slightly p

Question 18

Instruction 3-14
Given below are the rating and performance scores of 15 laptop computers.
 $$\begin{array} { | l | l | l | l | l | l | l | l | l | l | l | l | l | l | l | } 
\hline \begin{array} { l } 
\text { Performanc } \
\text { e Score }
\end{array} & 115 & 191 & 153 & 194 & 236 & 184 & 184 & 216 & 185 & 183 & 189 & 202 & 192 & 141 \
\hline \begin{array} { l } 
\text { Overall } \
\text { Rating }
\end{array} & 74 & 78 & 79 & 80 & 84 & 76 & 77 & 92 & 83 & 78 & 77 & 78 & 78 & 73 \
\hline
\end{array}$$
-Referring to Instruction 3-14,how will you classify the linear relationship between the performance scores and the rating?

Accepted Answer

The answer of Instruction 3-14
Given below are the rating and...

Question 19

The coefficient of variation is expressed as a_________.

Accepted Answer

A)  histogram 
B)  percentage 
C)  box-and-whisker plot 
D)  five-number summary 
A)  histogram 
B)  percentage 
C)  box-and-whisker plot 
D)  five-number summary

Question 20

Instruction 3-6
The rates of return of an Internet Service Provider over a 10 year period are:
10.25%, 12.64%, 8.37%, 9.29%, 6.23%, 42.53%, 29.23%, 15.25%, 21.52%, -2.35%.
-Referring to Instruction 3-6,compute the geometric mean rate of return.

Accepted Answer

The answer of Instruction 3-6
The rates of return of an...

If the mean is greater than the median,the distribution is likely to be negative or left skewed.

In a set of numerical data,the value for Q3 can never be smaller than the value for Q1.

Summary measures which are not influenced by extreme values,are called _____________ .

According to the Chebyshev rule,at least what percentage of the observations in any data set are contained within a distance of 2 standard deviations around the mean?

As a general rule,an observation is considered an extreme value if its Z score is greater than -3.

The interquartile range is not sensitive to extreme values.

The coefficient of variation is a measure of central tendency in the data.

Certain rules can be applied when calculating the quartiles.Which of the following is NOT true about these rules.

Instruction 3-6 The rates of return of an Internet Service Provider over a 10 year period are: 10.25%, 12.64%, 8.37%, 9.29%, 6.23%, 42.53%, 29.23%, 15.25%, 21.52%, -2.35%. -Referring to Instruction 3-6,what is the shape of the distribution for the rate of return?

Instruction 3-2 The data below represents the amount of grams of carbohydrates in a serving of breakfast cereal in a sample of 11 different servings. 11, 15, 23, 29, 19, 22, 21, 20, 15, 25, 17 -Referring to Instruction 3-2,the range in the carbohydrate amounts is _____________ grams.

The rate of return for Microsoft's stock over a seven year period is 0.527,0.145,0.684,1.146,0.564,0.883 and 0.436.The geometric mean rate of return is _____________ .

The interquartile range is a measure of central tendency.

Instruction 3-5 The rate of return of a listed Australian company over the past 15 years are: 3.17%, 4.43%, 5.93%, 5.43%, 7.29%, 8.21%, 6.23%, 5.23%, 4.34%, 6.68%, 7.14%, -5.56%, -5.23%, -5.73%, -10.34%. -Referring to Instruction 3-5,what is the range of the rate of return?

Instruction 3-3B The stem-and-leaf display below represents the number of vitamin supplements sold by a health food store in a sample of 16 days. Stem Leaves 1 99 2L 0023 2H 567 3L 034 3H 568 4L 1 -Referring to Instruction 3-3B,what type of shape does the distribution of the sample appear to have?

The coefficient of variation is expressed as a_________.

Instruction 3-6 The rates of return of an Internet Service Provider over a 10 year period are: 10.25%, 12.64%, 8.37%, 9.29%, 6.23%, 42.53%, 29.23%, 15.25%, 21.52%, -2.35%. -Referring to Instruction 3-6,compute the geometric mean rate of return.

Defining and Collecting Data

Organising and Visualising Data

Basic Probability

Some Important Discrete Probability Distributions

The Normal Distribution and Other Continuous Distributions

Sampling Distributions

Confidence Interval Estimation

Fundamentals of Hypothesis Testing: One-Sample Tests

Hypothesis Testing: Two-Sample Tests

Analysis of Variance

Simple Linear Regression

Introduction to Multiple Regression

Time-Series Forecasting and Index Numbers

Chi-Square Tests

Multiple Regression Model Building

Decision Making

Statistical Applications in Quality Management

Further Non-Parametric Tests

Filters

Exam 3: Numerical Descriptive Measures

If the mean is greater than the median,the distribution is likely to be negative or left skewed.

In a set of numerical data,the value for Q3 can never be smaller than the value for Q1.

Summary measures which are not influenced by extreme values,are called _____________ .

According to the Chebyshev rule,at least what percentage of the observations in any data set are contained within a distance of 2 standard deviations around the mean?

As a general rule,an observation is considered an extreme value if its Z score is greater than -3.

The interquartile range is not sensitive to extreme values.

The coefficient of variation is a measure of central tendency in the data.

Certain rules can be applied when calculating the quartiles.Which of the following is NOT true about these rules.

Instruction 3-6 The rates of return of an Internet Service Provider over a 10 year period are: 10.25%, 12.64%, 8.37%, 9.29%, 6.23%, 42.53%, 29.23%, 15.25%, 21.52%, -2.35%. -Referring to Instruction 3-6,what is the shape of the distribution for the rate of return?

Instruction 3-2 The data below represents the amount of grams of carbohydrates in a serving of breakfast cereal in a sample of 11 different servings. 11, 15, 23, 29, 19, 22, 21, 20, 15, 25, 17 -Referring to Instruction 3-2,the range in the carbohydrate amounts is _____________ grams.

The rate of return for Microsoft's stock over a seven year period is 0.527,0.145,0.684,1.146,0.564,0.883 and 0.436.The geometric mean rate of return is _____________ .

The interquartile range is a measure of central tendency.

Instruction 3-5 The rate of return of a listed Australian company over the past 15 years are: 3.17%, 4.43%, 5.93%, 5.43%, 7.29%, 8.21%, 6.23%, 5.23%, 4.34%, 6.68%, 7.14%, -5.56%, -5.23%, -5.73%, -10.34%. -Referring to Instruction 3-5,what is the range of the rate of return?

Instruction 3-3B The stem-and-leaf display below represents the number of vitamin supplements sold by a health food store in a sample of 16 days. Stem Leaves 1 99 2L 0023 2H 567 3L 034 3H 568 4L 1 -Referring to Instruction 3-3B,what type of shape does the distribution of the sample appear to have?

The coefficient of variation is expressed as a_________.

Instruction 3-6 The rates of return of an Internet Service Provider over a 10 year period are: 10.25%, 12.64%, 8.37%, 9.29%, 6.23%, 42.53%, 29.23%, 15.25%, 21.52%, -2.35%. -Referring to Instruction 3-6,compute the geometric mean rate of return.

Defining and Collecting Data

Organising and Visualising Data

Basic Probability

Some Important Discrete Probability Distributions

The Normal Distribution and Other Continuous Distributions

Sampling Distributions

Confidence Interval Estimation

Fundamentals of Hypothesis Testing: One-Sample Tests

Hypothesis Testing: Two-Sample Tests

Analysis of Variance

Simple Linear Regression

Introduction to Multiple Regression

Time-Series Forecasting and Index Numbers

Chi-Square Tests

Multiple Regression Model Building

Decision Making

Statistical Applications in Quality Management

Further Non-Parametric Tests

Filters