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Business Statistics in Practice 7th Edition Bowerman OConnell Murphree Test Bank and Solutions Manual Series: McGraw-Hill/Irwin Series in Operations and. Chapter 01 An Introduction to Business Statistics True / False Questions 1. A population is a set of existing units. True False 2. If we examine some of the. business statistics in practice 7th edition bowerman is available in our digital library an | PDF | MB Business Statistics in Practice, Seventh Edition.

Time series data are collected at different time periods. Ratio This is a qualitative variable without order; therefore, a nominative variable. Process B. Factors in this study are location of residence, type of car, number of miles from work, number of children under 18, and monthly income. Random sampling is introduced informally in the context of more tightly focused case studies. Population 2.

Set B. Process C. Variable D.

Census Sampling B. Measurement C.

Experimental analysis D. Observational analysis Runs plot B. Statistical analysis C. Analysis D. Inference Qualitative B. Quantitative C. Categorical D.

Nominative Process B. Statistical inference C. Runs plot D. Ratio D. Sample B. Census D. Population Cross-sectional analysis B. Runs plot C. Descriptive statistics D. Time series analysis The change in the daily price of a stock is what type of variable? Random D. Variable B. Set D. Element Variables B. Elements C. Statistics D. Measurements Existing data source B. Observational data source C. Experimental data source D. Cross-sectional data source One method of determining whether a sample being studied can be used to make statistical inferences about the population is to: Run a descriptive statistical analysis B.

Calculate a proportion C.

Create a cross-sectional data analysis D. Which of the following is NOT an example of unethical statistical practices? Inappropriate interpretation of statistical results B. Using graphs to make statistical inferences C. Improper sampling D. Descriptive measures that mislead the user E. None of these Cross-sectional B. Time series A study is being conducted on the effect of gas price on the number of miles driven in a given month.

Residents in two cities, one on the East Coast and one on the West Coast are randomly selected and asked to complete a questionnaire on the type of car they drive, the number of miles they live from work, the number of children under 18 in their household, their monthly income, and the number of miles they have driven over the past 30 days.

List the response variable s. Is this an experimental or observational study? List the factor s. Looking at the runs plot of gasoline prices over the past 30 months, describe what it tells us about the price of gas during these 30 months. Using the following data table of the average hours per week spent on Internet activities by to year-olds for the years , construct the runs plot and interpret.

Reflective Thinking Blooms: Remember Difficulty: Population 2. Understand Difficulty: Population 3. Random Sampling 4. Variable 5. Variable 6. Time Series Data 8. Cross-Sectional Data 9. This is an example of time series data. Time series data are collected at different time periods. Time Series Data The cumulative GPA is an example of a variable, which is a characteristic of the element college business students. Data Data Sources FALSE In experimental studies, the aim is to manipulate the factor, which is related to the response variable.

Statistical inference is the science of using a sample of measurements to make generalizations about the population of measurements. Statistical Inference Random Sampling FALSE Using different samples and tests to produce a desired conclusion does not make the conclusion true. Ethics Blooms: Ethical Guidelines Predictable By definition, ratio variables are quantitative and have an absolute zero value.

Whether a person has a charge account A quantitative variable is measurable and noncategorical. Value of company stock A categorical variable is qualitative, not measured. By definition, elements and variables are the same; processes are not measurements. Nominative and interval Nominative and ordinal are types of qualitative variables.

Ratio Temperature is quantitative excludes nominative and ordinal and the ratio of two temperatures is not meaningful. Ratio Interval and ratio are quantitative variables; jersey numbers have no logical order. Ratio Nominative and ordinal are qualitative variables; weight creates logical ratios: Ratio Interval and ratio are quantitative variables, nominative is only a naming category, and police rank has order.

Cross-sectional data A runs plot is a graphical display of time series data. Statistical inference By definition, a time series is a study of data over time; descriptive statistics is the study of the measurements of population variables; a random sample is a data set.

Interval Nominative and ordinal are qualitative variables; exam scores have no meaningful ratio and no inherently defined zero value. Ratio Nominative and ordinal are qualitative variables; miles driven can have a meaningful ratio. Interval Ratio and interval are quantitative variables; ordinal implies order or rank. Ratio This is a qualitative variable without order; therefore, a nominative variable.

Variable Measurement and observation are methods attached to a variable; a sample is a subset of the units in a population.

Variable By definition, a census looks at the entire population. Census A process is a sequence of operations; a census looks at the entire population; set is related to population. Observational analysis By definition, sampling is taking a portion of the population to measure; experimental and observational analysis are methods of obtaining data.

Measurement A runs plot is a graphical display of data over time. Inference By definition, inference is taking a sample of data and its measurements and relating those measurements to the population as a whole.

Sample Variable By definition, a census looks at an entire population; a variable is a characteristic of an element within the population; a process is a sequence of operations that produces elements of a population. Nominative Qualitative, categorical, and nominative have similar definitions. Random sampling By definition, a runs plot is a graphical display; random sampling is a method of selecting a portion of a population; statistical inference is the science of using a sample of measurements to infer about the entire population.

Interval Quantitative, ratio, and interval all have similar definitions. Population By definition, a census is the examination of all population measurements; a process is a sequence of operations; a sample is a subset of a population. Time series analysis A runs plot and time series analysis both look at data over time; cross-sectional analysis looks at data collected at the same point in time. Descriptive Statistics Quantitative Qualitative and ordinal have similar definitions; random variables are all characteristics of a population element.

Element By definition, a variable is a characteristic of an element; a measurement assigns a value to a variable; an element is one unit of a population. Measurements By definition, measurements assign values to a variable of an element; statistics is the science of describing aspects of a set of measurements; variables are characteristics of elements in a population. Descriptive statistics D. Time series analysis The change in the daily price of a stock is what type of variable?

Random D. Variable B.

Set D. Element Variables B. Elements C. Statistics D. Measurements Existing data source B. Observational data source C. Experimental data source D. Cross-sectional data source One method of determining whether a sample being studied can be used to make statistical inferences about the population is to: Run a descriptive statistical analysis B. Calculate a proportion C. Create a cross-sectional data analysis D. Which of the following is NOT an example of unethical statistical practices?

Inappropriate interpretation of statistical results B. Using graphs to make statistical inferences C. Improper sampling D. Descriptive measures that mislead the user E.

None of these Cross-sectional B. Time series A study is being conducted on the effect of gas price on the number of miles driven in a given month.

Residents in two cities, one on the East Coast and one on the West Coast are randomly selected and asked to complete a questionnaire on the type of car they drive, the number of miles they live from work, the number of children under 18 in their household, their monthly income, and the number of miles they have driven over the past 30 days. List the response variable s. Is this an experimental or observational study? List the factor s. Looking at the runs plot of gasoline prices over the past 30 months, describe what it tells us about the price of gas during these 30 months.

Using the following data table of the average hours per week spent on Internet activities by to year-olds for the years , construct the runs plot and interpret. Reflective Thinking Blooms: Remember Difficulty: Population 2. Understand Difficulty: Population 3. Random Sampling 4. Variable 5. Variable 6.

Time Series Data 8. Cross-Sectional Data 9. This is an example of time series data. Time series data are collected at different time periods. Time Series Data The cumulative GPA is an example of a variable, which is a characteristic of the element college business students. Data Data Sources FALSE In experimental studies, the aim is to manipulate the factor, which is related to the response variable.

Statistical inference is the science of using a sample of measurements to make generalizations about the population of measurements. Statistical Inference Random Sampling FALSE Using different samples and tests to produce a desired conclusion does not make the conclusion true. Ethics Blooms: Ethical Guidelines Predictable By definition, ratio variables are quantitative and have an absolute zero value. Whether a person has a charge account A quantitative variable is measurable and noncategorical.

Value of company stock A categorical variable is qualitative, not measured. By definition, elements and variables are the same; processes are not measurements. Nominative and interval Nominative and ordinal are types of qualitative variables.

Ratio Temperature is quantitative excludes nominative and ordinal and the ratio of two temperatures is not meaningful. Ratio Interval and ratio are quantitative variables; jersey numbers have no logical order. Ratio Nominative and ordinal are qualitative variables; weight creates logical ratios: Ratio Interval and ratio are quantitative variables, nominative is only a naming category, and police rank has order. Cross-sectional data A runs plot is a graphical display of time series data.

Statistical inference By definition, a time series is a study of data over time; descriptive statistics is the study of the measurements of population variables; a random sample is a data set. Interval Nominative and ordinal are qualitative variables; exam scores have no meaningful ratio and no inherently defined zero value.

Ratio Nominative and ordinal are qualitative variables; miles driven can have a meaningful ratio. Interval Ratio and interval are quantitative variables; ordinal implies order or rank. Ratio This is a qualitative variable without order; therefore, a nominative variable.

Variable Measurement and observation are methods attached to a variable; a sample is a subset of the units in a population.

Variable By definition, a census looks at the entire population. Census A process is a sequence of operations; a census looks at the entire population; set is related to population. Observational analysis By definition, sampling is taking a portion of the population to measure; experimental and observational analysis are methods of obtaining data.

Measurement A runs plot is a graphical display of data over time. Inference By definition, inference is taking a sample of data and its measurements and relating those measurements to the population as a whole. Sample Variable By definition, a census looks at an entire population; a variable is a characteristic of an element within the population; a process is a sequence of operations that produces elements of a population.

Nominative Qualitative, categorical, and nominative have similar definitions. Random sampling By definition, a runs plot is a graphical display; random sampling is a method of selecting a portion of a population; statistical inference is the science of using a sample of measurements to infer about the entire population.

Interval Quantitative, ratio, and interval all have similar definitions. Population By definition, a census is the examination of all population measurements; a process is a sequence of operations; a sample is a subset of a population.

Time series analysis A runs plot and time series analysis both look at data over time; cross-sectional analysis looks at data collected at the same point in time. Descriptive Statistics Quantitative Qualitative and ordinal have similar definitions; random variables are all characteristics of a population element. Element By definition, a variable is a characteristic of an element; a measurement assigns a value to a variable; an element is one unit of a population.

Measurements By definition, measurements assign values to a variable of an element; statistics is the science of describing aspects of a set of measurements; variables are characteristics of elements in a population. Cross-sectional data source By definition, an experimental data source is a collection of data where one is able to manipulate values; an observational data source is a collection of data where one is unable to control factors.

Cross-sectional is a method of analyzing data, not the collection of data. Produce a runs plot Runs plot are a way of looking at processes over time, which can then be utilized to make inferences about a population.

Simply looking at descriptive statistics of which, proportion and cross-sectional analysis are methods or procedures is not sufficient to make inferences. Apply Difficulty: None of these It is unethical to use methods or procedures designed to mislead the audience that is viewing the findings. Time series A time series is a collection of data taken over time, while a cross-section is a collection of data taken at the same point in time.

Time Series Data Essay Questions The response variable in this study is the number of miles driven over the past 30 days. Response variables are defined as the variable of interest in a study. Apply Blooms: Observational Study Observational study Feedback: An observational study occurs when analysts are unable to control the factors of interest.

An experimental study occurs when values of factors that are related to the variable of interest can be set or manipulated. Factors in this study are location of residence, type of car, number of miles from work, number of children under 18, and monthly income.

Factors are related to the variable of interest. The price of gas peaked in the 7th month. The lowest price is observed around months from the start of the data collection. At the end of the 30 months, gas price is beginning to show stability.

Observing the rise and fall of a time series or runs plot. Hours spent on the Internet have increased over the 10 years but show a slight leveling off in the last 3 years. Displaying the average hours spent on Internet activities graphically results in a time series or runs plot. An increase over time in the amount of time can be observed through either the graph or data.

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