Question 1

Exhibit 3-3
A researcher has collected the following sample data. The mean of the sample is 5.
3 5 12 3 2
-Refer to Exhibit 3-3. The range is

Accepted Answer

A) 1 
B) 2 
C) 10 
D) 12 
A) 1 
B) 2 
C) 10 
D) 12

Question 2

The mean of the sample

Accepted Answer

A) is always smaller than the mean of the population from which the sample was taken 
B) can never be zero 
C) can never be negative 
D) None of these alternatives is correct. 
A) is always smaller than the mean of the population from which the sample was taken 
B) can never be zero 
C) can never be negative 
D) None of these alternatives is correct.

Question 3

The measure of location which is the most likely to be influenced by extreme values in the data set is the

Accepted Answer

A) range 
B) median 
C) mode 
D) mean 
A) range 
B) median 
C) mode 
D) mean

Question 4

Since the population size is always larger than the sample size, then the sample statistic

Accepted Answer

A) can never be larger than the population parameter 
B) can never be equal to the population parameter 
C) can be smaller, larger, or equal to the population parameter 
D) can never be smaller than the population parameter 
A) can never be larger than the population parameter 
B) can never be equal to the population parameter 
C) can be smaller, larger, or equal to the population parameter 
D) can never be smaller than the population parameter

Question 5

Which of the following is not a measure of dispersion?

Accepted Answer

A) the range 
B) the 50th percentile 
C) the standard deviation 
D) the interquartile range 
A) the range 
B) the 50th percentile 
C) the standard deviation 
D) the interquartile range

Question 6

The population change between 2000 and 2010 for several small cities are shown below.   For the above sample, determine the following measures. 
a.The mean
b.The standard deviation
c.The median

Accepted Answer

a.1,164
b.

Question 7

The yearly incomes of the top highest paying professions in the United States are shown below.   For the above sample, determine the following measures (Give your answer in dollars). 
a.The mean yearly salary
b.The standard deviation
c.The median
d.The mode

Accepted Answer

a.$118,000

Question 8

$\mu$is an example of a

Accepted Answer

A) population parameter 
B) sample statistic 
C) population variance 
D) mode 
A) population parameter 
B) sample statistic 
C) population variance 
D) mode

Question 9

Exhibit 3-4
The following is the frequency distribution for the speeds of a sample of automobiles traveling on an interstate highway.  
-Refer to Exhibit 3-4. The mean is

Accepted Answer

A) 35 
B) 670 
C) 10 
D) 67 
A) 35 
B) 670 
C) 10 
D) 67

Question 10

The variance of a sample was reported to be 144. The report indicated that   = 7200. What has been the sample size?

Accepted Answer

A) 49 
B) 50 
C) 51 
D) 52 
A) 49 
B) 50 
C) 51 
D) 52

Question 11

The sum of deviations of the individual data elements from their mean is

Accepted Answer

A) always greater than zero 
B) always less than zero 
C) sometimes greater than and sometimes less than zero, depending on the data elements 
D) always equal to zero 
A) always greater than zero 
B) always less than zero 
C) sometimes greater than and sometimes less than zero, depending on the data elements 
D) always equal to zero

Question 12

The following data shows the number of students enrolled in various professors' statistics classes.   For the above sample, compute the following measures. 
a.The variance
b.The standard deviation
c.If we consider professor A's enrollment as an outlier, compute the variance and the standard deviations, excluding Professor A's class. (Round to the nearest hundredth, as needed.)

Accepted Answer

a.1461.47

Question 13

The grade point average of the students at UTC is 2.80 with a standard deviation of 0.84. The grade point average of students at UTK is 2.4 with a standard deviation of 0.84. Which university shows a more dispersed grade distribution?

Accepted Answer

UTK's coefficient of variation

Exhibit 3-3 A researcher has collected the following sample data. The mean of the sample is 5. 3 5 12 3 2 -Refer to Exhibit 3-3. The range is

The mean of the sample

The measure of location which is the most likely to be influenced by extreme values in the data set is the

Since the population size is always larger than the sample size, then the sample statistic

Which of the following is not a measure of dispersion?

The population change between 2000 and 2010 for several small cities are shown below. For the above sample, determine the following measures. a.The mean b.The standard deviation c.The median

The yearly incomes of the top highest paying professions in the United States are shown below. For the above sample, determine the following measures (Give your answer in dollars). a.The mean yearly salary b.The standard deviation c.The median d.The mode

$\mu$ is an example of a

Exhibit 3-4 The following is the frequency distribution for the speeds of a sample of automobiles traveling on an interstate highway. -Refer to Exhibit 3-4. The mean is

The variance of a sample was reported to be 144. The report indicated that = 7200. What has been the sample size?

The sum of deviations of the individual data elements from their mean is

The grade point average of the students at UTC is 2.80 with a standard deviation of 0.84. The grade point average of students at UTK is 2.4 with a standard deviation of 0.84. Which university shows a more dispersed grade distribution?

Data and Statistics

Descriptive Statistics: Tabular and Graphical Displays

Introduction to Probability

Discrete Probability Distributions

Continuous Probability Distributions

Sampling and Sampling Distributions

Interval Estimation

Hypothesis Tests

Inference About Means and Proportions With Two Populations

Inferences About Population Variances

Comparing Multiple Proportions, Test of Independence and Goodness of Fit

Experimental Design and Analysis of Variance

Simple Linear Regression

Multiple Regression

Regression Analysis: Model Building

Time Series Analysis and Forecasting

Nonparametric Methods

Statistical Methods for Quality Control

Index Numbers

Decision Analysis on Website

Sample Survey on Website

Filters

Exam 3: Descriptive Statistics: Numerical Measures

Exhibit 3-3 A researcher has collected the following sample data. The mean of the sample is 5. 3 5 12 3 2 -Refer to Exhibit 3-3. The range is

The mean of the sample

The measure of location which is the most likely to be influenced by extreme values in the data set is the

Since the population size is always larger than the sample size, then the sample statistic

Which of the following is not a measure of dispersion?

The population change between 2000 and 2010 for several small cities are shown below. For the above sample, determine the following measures. a.The mean b.The standard deviation c.The median

The yearly incomes of the top highest paying professions in the United States are shown below. For the above sample, determine the following measures (Give your answer in dollars). a.The mean yearly salary b.The standard deviation c.The median d.The mode

μ\muμ is an example of a

Exhibit 3-4 The following is the frequency distribution for the speeds of a sample of automobiles traveling on an interstate highway. -Refer to Exhibit 3-4. The mean is

The variance of a sample was reported to be 144. The report indicated that = 7200. What has been the sample size?

The sum of deviations of the individual data elements from their mean is

The grade point average of the students at UTC is 2.80 with a standard deviation of 0.84. The grade point average of students at UTK is 2.4 with a standard deviation of 0.84. Which university shows a more dispersed grade distribution?

Data and Statistics

Descriptive Statistics: Tabular and Graphical Displays

Introduction to Probability

Discrete Probability Distributions

Continuous Probability Distributions

Sampling and Sampling Distributions

Interval Estimation

Hypothesis Tests

Inference About Means and Proportions With Two Populations

Inferences About Population Variances

Comparing Multiple Proportions, Test of Independence and Goodness of Fit

Experimental Design and Analysis of Variance

Simple Linear Regression

Multiple Regression

Regression Analysis: Model Building

Time Series Analysis and Forecasting

Nonparametric Methods

Statistical Methods for Quality Control

Index Numbers

Decision Analysis on Website

Sample Survey on Website

Filters

$\mu$ is an example of a