Test
Statistics 13 - Midterm 1, Chapter 1
Crea una cuenta gratis para terminar este test
Guarda tu progreso y consulta tu resultado final.
¿Ya tienes cuenta? Inicia sesión
Preguntas del test (18)
1Determine whether the given value is a statistic or a parameter.
- In a study of all 3579 professors at a college, it is found that 55% own a vehicle.- AStatistic because the value is a numerical measurement describing a characteristic of a sample.
- BStatistic because the value is numerical describing a characteristic of a population.
- CParameter because the value is a numerical measurement describing a characteristic of a sample.
- DParameter because the value is a numerical measurement describing a characteristic of population.
2Determine whether the given value is a statistic or a parameter.
-A sample of professors is selected, and it is found that 25% own a computer.- AStatistic because the value is a numerical measurement describing a characteristic of a sample.
- BStatistic because the value is numerical describing a characteristic of a population.
- CParameter because the value is a numerical measurement describing a characteristic of a sample.
- DParameter because the value is a numerical measurement describing a characteristic of population.
3Determine whether the data described below are qualitative or quantitative and explain why.
- The numbers of students in the graduating class at different high schools- AThe data are quantitative because they consist of counts or measurements.
- BThe data are qualitative because they don’t measure or count anything.
- CThe data are qualitative because they consist of counts or measurements.
- DThe data are quantitative because they don’t measure or count anything.
4Determine whether the given value is continuous or discrete and explain why.
The number of teachers at a school each year.- AThe data are discrete because the data can only take on specific values.
- BThe data are discrete because the data can take on any value in an interval.
- CThe data are continuous because the data can only take on specific values.
- DThe data are continuous because the data can take on any value in an interval.
5A variable can be both quantitative and discrete.
- AVerdadero
- BFalso
6Determine whether the given value is a statistic or a parameter.
- A homeowner measured the voltage supplied to his home on 37 different days and the average (mean) value is 103.3 volts.- AThe given value is a parameter for the year because the data collected represent a sample.
- BThe given value is a statistic for the year because the data collected represent a sample.
- CThe given value is a parameter for the year because the data collected represent a population.
- DThe given value is a statistic for the year because the data collected represent a population.
7Determine whether the given value is a statistic or a parameter.
-A particular country has 50 total states. If the areas of all 50 states are added and the sum is divided by 50, the result is 176,342 square kilometers. Determine whether this result is a statistic or a parameter.- AThe result is a parameter because it describes some characteristic of a sample.
- BThe result is a statistic because it describes some characteristic of a sample.
- CThe result is a statistic because it describes some characteristic of a population.
- DThe result is a parameter because it describes some characteristic of a population.
8Determine whether the value is a discrete random variable, continuous random variable, or not a random variable.
- The number of people in a restaurant that has a capacity of 250.- AContinuous Random Variable
- BDiscrete Random Variable
- CIt is not a Random Variable
9Determine whether the value is a discrete random variable, continuous random variable, or not a random variable.
- The eye color of people on commercial aircraft flights. Discrete random variable, continuous random variable, or not a random variable?- AContinuous Random Variable
- BDiscrete Random Variable
- CNot a Random Variable
10Determine whether the value is a discrete random variable, continuous random variable, or not a random variable.
The time required to download a file from the Internet. Discrete Random Variable, Continuous Random Variable, or not a random variable?- AContinuous Random Variable
- BDiscrete Random Variable
- CIt is not a Random Variable
11Determine which of the four levels of measurement (nominal, ordinal, interval, ratio) is most appropriate for the data below.
-Body temperatures in degrees Fahrenheit- AThe interval level of measurement is most appropriate because the data can ordered, differences can be found are meaningful, and there is no natural starting zero point.
- BB. The ordinal level of measurement is most appropriate because the data can be ordered, but differences (obtained by subtraction) cannot be found or are meaningless.
- CThe ratio level of measurement is most appropriate because the data ordered, differences (obtained by subtraction) can be found and are meaningful, and there is a natural starting point.
- DThe nominal level or measurement is most appropriate because the data cannot be ordered.
12Determine which of the four levels of measurement (nominal, ordinal, interval, ratio) is most appropriate for the data below.
- Years in which a war was started- AThe ratio level of measurement is most appropriate because the data is ordered, differences (obtained by subtraction) can be found and are meaningful, and there is a natural starting point.
- BThe nominal level or measurement is most appropriate because the data cannot be ordered.
- CThe interval level of measurement is most appropriate because the data can ordered, differences can be found are meaningful, and there is no natural starting zero point.
- DThe ordinal level of measurement is most appropriate because the data can be ordered, but differences (obtained by subtraction) cannot be found or are meaningless.
13Determine which of the four levels of measurement (nominal, ordinal, interval, ratio) is most appropriate for the data below.
- Monthly Temperatures: 61 F, 65 F, 69 F, 73 F, 77 F- ANominal
- BRatio
- CInterval
- DOrdinal
14Determine which of the four levels of measurement (nominal, ordinal, interval, ratio) is most appropriate for the data below.
- Ratings of Novels- AThe interval level of measurement is most appropriate because the data can ordered, differences can be found are meaningful, and there is no natural starting zero point.
- BThe ratio level of measurement is most appropriate because the data ordered, differences (obtained by subtraction) can be found and are meaningful, and there is a natural starting point.
- CThe ordinal level of measurement is most appropriate because the data can be ordered, but differences (obtained by subtraction) cannot be found or are meaningless.
- DThe nominal level or measurement is most appropriate because the data cannot be ordered.
15Identify the level of measurement of the data, and explain what is wrong with the given calculation.
- In a survey, the favorite foods of respondents are identified as 100 for Italian food, 200 for Mexican food, 300 for Chinese food, and 400 for anything else. The average (mean) is calculated for 640 respondents and the result is 256.1.
The data are the ratio / nominal / ordenal / interval- ARatio; The true average is 202.4.
- BNominal; Such data are not counts of measure or anything, so it makes no sense to compute their average (mean)
- COrdinal; Such data are not counts of measure or anything, so the average (mean) needs to be computed in a different way.
- DInterval; There is nothing wrong with the given calculation.
16Identify the following as nominal, ordinal, interval, or ratio level data.
A) Commuting times to work:
B) Religions:
C) Instructors classified as: Easy, Difficult, or Impossible:
D) SAT Scores:- A(A) = Interval (B) = Ordinal (C) = Nominal (D) = Ratio
- B(A) = Nominal (B) = Interval (C) = Ratio (D) = Ordinal
- C(A) = Ratio (B) = Nominal (C) = Ordinal (D) = Interval
- D(A) = Ordinal (B) = Ratio (C) = Interval (D) = Nominal
17Identify the type of sampling used (random, systematic, convenience, stratified, or cluster sampling) in the situation described below.
- A man is selected by a marketing company to participate in a paid focus group. The company says the man was selected because everyone in three random selected towns was being selected. Which type of sampling did the marketing company use?- ASystematic Sampling
- BStratified sampling
- CCluster sampling
- DRandom sampling
- EConvenience sampling
18Identify the type of sampling used (random, systematic, convenience, stratified, or cluster sampling) in the situation described below.
- To determine customer opinion of their musical variety, Sony randomly selects 130 concerts during a certain week and surveys all concert goers.- ASystematic sampling
- BStratified sampling
- CCluster sampling
- DRandom sampling
- EConvenience sampling
Información
- Descripción
- Statistics 13 Test sobre Statistics 13 - Midterm 1, Chapter 1 , creado por Crystani C'Mickey Freeman el 03/02/2019.
- Idioma
- English
- Visitas
- 4
- Etiquetas
- Valoración
- Aún sin valoraciones Valora este test