1. Determine whether the underlined number is a statistic or a parameter.

In a study of all 3161 employees at a college comma it is found that Modifying 50 % with underline own a television. Inastudyofall3161employeesatacollege,itisfoundthat50%ownatelevision. Choose the correct statement below.

a. Parameter Parameter because the value is a numerical measurement describing a characteristic of a sample b. Statistic Statistic because the value is a numerical measurement describing a characteristic of a population

c. Parameter Parameter because the value is a numerical measurement describing a characteristic of a population

d. Statistic Statistic because the value is a numerical measurement describing a characteristic of a sample

2. Determine whether the given value is a statistic or a parameter.

A homeowner measured the voltage supplied to his home on all 30 days of a given month onall30daysofagivenmonth, and the average (mean) value is 141.2 volts.

A. The given value is a statistic for the month because the data collected represents a population

B. The given value is a parameter for the month because the data collected represent a sample

C. The given value is a statistic for the month because the data collected represent a sample

D. The given value is a parameter for the month because the data collected represent a population

State whether the data described below are discrete or continuous, and explain why.

The numbers of employees working at different companies

A. The data are discrete because the data can take on any value in an interval

B. The data are continuous because thedatacanonlytakeon specific values

C. The data are continuous because thedatacantakeonany value in an interval

D. The data are discrete because thedatacanonlytakeon specific values

3. Determine which of the four levels of measurement (nominal, ordinal, interval, ratio) is most appropriate for the data below.

Types of restaurants left parenthesis fast food comma organic food comma sea food comma etc. right parenthesis Typesofrestaurants(fastfood,organicfood,seafood,etc.)

Choose the correct answer below.

A. The interval level of measurement is most appropriate because the data canbe ordered comma differences left parenthesis obtained by subtraction right parenthesis can be found and are meaningful comma and ordered,differences(obtainedbysubtraction)canbefoundandaremeaningful,and there is no natural starting point.

B. The ordinal level of measurement is most appropriate because the data canbe ordered comma but differences left parenthesis obtained by subtraction right parenthesis cannot be found or are ordered,butdifferences(obtainedbysubtraction)cannotbefoundorare meaningless.

C. The nominal level of measurement is most appropriate because the data cannot be ordered nothing

D. The ratio ratio level of measurement is most appropriate because the data canbeordered, differences left parenthesis obtained by subtraction right parenthesis can be found and are meaningful comma and there is a differences(obtainedbysubtraction)canbefoundandaremeaningful,andthereisa natural starting point.

Determine which of the four levels of measurement (nominal, ordinal, interval, ratio) is most appropriate for the data below.

College rankings Collegerankings

Question content area bottom Part 1 Choose the correct answer below.

A. The interval interval level of measurement is most appropriate because the data can be canbe ordered comma differences left parenthesis obtained by subtraction right parenthesis can be found and are meaningful comma and ordered,differences(obtainedbysubtraction)canbefoundandaremeaningful,and there is no natural starting point. thereisnonaturalstartingpoint.

B. The nominal nominal level of measurement is most appropriate because the data cannot be cannotbe ordered. ordered. nothing

C. The ordinal ordinal level of measurement is most appropriate because the data can be canbe ordered comma ordered, but but differences differences cannot cannot be found befound or are orare meaningless. meaningless. nothing nothing nothing nothing nothing

4. Determine which of the four levels of measurement (nominal, ordinal, interval, ratio) is most appropriate.

Positions of runners in a race Positionsofrunnersinarace

Question content area bottom Part 1 Choose the correct level of measurement.

A. Interval

B. Ordinal Ordinal Ordinal

C. Ratio

D. Nominal Nominal Nominal

5. Determine which of the four levels of measurement (nominal, ordinal, interval, ratio) is most appropriate.

Monthly temperatures: 63 degrees Upper F comma 69 degrees Upper F comma 75 degrees Upper F comma 81 degrees Upper F comma and 87 degrees Upper F Monthlytemperatures:63F,69F,75F,81F,and87F

Question content area bottom Part 1 Choose the correct answer below.

Ordinal

Ratio Ratio Ratio

Nominal

Interval Interval Interval

6. Determine which of the four levels of measurement (nominal, ordinal, interval, ratio) is most appropriate for the data below.

Eye colors Eyecolors

Question content area bottom Part 1 Choose the correct answer below.

A. The interval interval level of measurement is most appropriate because the data can be canbe ordered comma differences left parenthesis obtained by subtraction right parenthesis can be found and are meaningful comma and ordered,differences(obtainedbysubtraction)canbefoundandaremeaningful,and there is no natural starting point. thereisnonaturalstartingpoint.

B. The nominal nominal level of measurement is most appropriate because the data cannot cannot be be ordered. ordered. nothing nothing nothing nothing nothing nothing nothing nothing nothing nothing

C. The ratio ratio level of measurement is most appropriate because the data can be ordered comma canbeordered, differences left parenthesis obtained by subtraction right parenthesis can be found and are meaningful comma and there is a differences(obtainedbysubtraction)canbefoundandaremeaningful,andthereisa natural starting point. naturalstartingpoint.

D. The ordinal ordinal level of measurement is most appropriate because the data can be canbe ordered comma but differences left parenthesis obtained by subtraction right parenthesis cannot be found or are ordered,butdifferences(obtainedbysubtraction)cannotbefoundorare meaningless. meaningless.

7. Identify the level of measurement of the data, and explain what is wrong with the given calculation.

In a set of data, blood lead levels bloodleadlevels are represented as 1 1 for low comma low, 2 2 for medium comma medium, and 3 3 for high. high. The average (mean) of the 770 770 blood lead levels bloodleadlevels is 1.3 . 1.3.

Question content area bottom Part 1 The data are at the interval ordinal nominal ratio level of measurement.

8. Question content area top Part 1 Determine whether the given value is from a discrete or continuous data set.

When a car is randomly selected, it is found to have 3 wipers 3wipers.

Question content area bottom Part 1 Choose the correct answer below.

A. The data set is neither continuous nor discrete.

B. A discrete discrete data set because there are a finite number of possible values. thereareafinitenumberofpossiblevalues. nothing

C. A continuous continuous data set because there are infinitely many possible values and those thereareinfinitelymanypossiblevaluesandthose values can be counted. valuescanbecounted.

D. A continuous continuous data set because there are infinitely many possible values and those values cannot be counted. valuescannotbecounted

9. hich of the following is NOT a level of measurement?

Question content area bottom Part 1 Choose the correct answer below.

Ratio

Nominal

Ordinal

Quantitative

10. Which of the following is associated with a parameter?

Question content area bottom Part 1 Choose the correct answer below.

A. A numerical measurement describing some characteristic of a sample.

B. Data that were obtained from an entire population.

C. Data that were obtained from a voluntary poll at the end of a service call.

D. Data that were obtained from a sample.

11. Which of the following consists of discrete data?

Question content area bottom Part 1 Choose the correct answer below.

Amount of rainfall

Hair color

Number of suitcases on a plane

Tree height

12. dentify the type of sampling used (random, systematic, convenience, stratified, or cluster sampling) in the situation described below.

A researcher selects every 230 th social security number and researcherselectsevery230thsocialsecuritynumberand surveys surveys the the corresponding corresponding person. person. nothing nothing nothing

Question content area bottom Part 1 Which type of sampling did the researcher?

Convenience

Stratified

Cluster

Systematic

Random