Question 1

PlayTime Toys Inc. employs 50 people in the Assembly Department. Forty of the employees belong to a union and 10 do not. Five employees are selected at random to form a committee to meet with management regarding shift starting times. Would the 50 employees be considered a population or a sample?
A) population
B) sample

Accepted Answer

The 50 employees represent the entire group from which a smaller group (the committee) is drawn, making them a population.

Question 2

Among the many classes held at your college or university, your statistics class has been selected for a study. This one class is referred to as a ______________.
A) discrete
B) sample
C) census
D) population

Accepted Answer

A sample is a subset of a larger group (population) selected for observation and analysis. In this context, the statistics class selected for a study represents a sample of all classes held at the college or university.

Question 3

The Shell station on Portage Ave in Winnipeg is studying the number of litres of fuel that are sold on each day of the week. Records are available for the past year. Is the variable 'number of litres' discrete or continuous?
A) discrete
B) continuous

Accepted Answer

The variable 'number of litres' is continuous because it can take on any value within an interval, including fractions, not just whole numbers.

Question 4

Categorizing students as freshmen, sophomores, juniors and seniors is an example of the ______________ level of measurement.
A) nominal
B) ordinal
C) interval
D) ratio

Accepted Answer

Categorizing students as freshmen, sophomores, juniors, and seniors represents an ordinal level of measurement because it implies an order or ranking of the categories based on the number of years completed in school, but there is no meaningful numerical value assigned to each category. For example, we can say that juniors have completed more years of schooling than sophomores, but we cannot say that they have completed twice as much schooling as sophomores.

Question 5

PlayTime Toys Inc. employs 50 people in the Assembly Department. Forty of the employees belong to a union and 10 do not. Five employees are selected at random to form a committee to meet with management regarding shift starting times. Would the 5 selected employees be considered a population or a sample?
A) population
B) sample

Accepted Answer

The answer of PlayTime Toys Inc. employs 50 people in...

Question 6

The branch of statistics from which we draw conclusions from sample data is called _________________ statistics.
A) discrete
B) sample
C) descriptive
D) inferential

Accepted Answer

Inferential statistics allows us to make conclusions about a larger population based on a smaller sample. Descriptive statistics simply describe and summarize data, while discrete and sample statistics are not formal branches of statistics.

Question 7

The Shell station on Portage Ave in Winnipeg is studying the number of litres of fuel that are sold on each day of the week. Records are available for the past year. How can the variable 'number of litres' be best described?
A) Discrete
B) Continuous
C) Qualitative
D) Census
E) Nominal

Accepted Answer

The variable 'number of litres' is a continuous variable because it can take any numerical value within a certain range (e.g. 0.001 litres, 1.234 litres, 1000 litres). It is not limited to individual, separate values or categories.

Question 8

The branch of statistics in which data is collected, analyzed and presented in a concise format is called _____________ statistics.
A) discrete
B) sample
C) descriptive
D) inferential

Accepted Answer

Descriptive statistics is the branch of statistics that deals with summarizing and presenting data in a meaningful way. It includes measures of central tendency, variability, and distribution of the data. It is not concerned with making inferences or generalizations about populations based on samples, which is the focus of inferential statistics. Discrete statistics deals with discrete data sets and sample statistics are derived from the sample data.

Question 9

A variable that can have any value within a specific range is called _________________.
A) discrete
B) continuous
C) census
D) population

Accepted Answer

A variable that can have any value within a specific range is called continuous. Discrete variables can only take specific values, while census refers to a complete count of a population, and population refers to a group being studied.

Question 10

If we test a small number of light bulbs from a large group, the small group is called a ______________.
A) discrete
B) sample
C) descriptive
D) population

Accepted Answer

A small group taken from a larger group is called a sample. A population refers to the entire group being studied, while discrete and descriptive are not related terms in this context.

Question 11

The prime rate of interest is an example of a(n) __________________ level of measurement.
A) nominal
B) ordinal
C) interval
D) ratio

Accepted Answer

The prime rate of interest is a ratio level of measurement because it has a true zero point and allows for the comparison of absolute magnitudes.

Question 12

The "lowest" level of measurement is _____________.
A) nominal
B) ordinal
C) interval
D) ratio

Accepted Answer

Nominal measurement only involves naming or categorizing variables without any numerical value or ordering. It includes features like gender, race, eye color, etc.

Question 13

Ranked data is an example of a(n) _______________ level of measurement.
A) nominal
B) ordinal
C) interval
D) ratio

Accepted Answer

Ranked data is based on a ranking system and has a natural order to it. Therefore, it is an example of an ordinal level of measurement. Nominal level of measurement is used for categorical data, where there is no natural order or relation between the categories. Interval and ratio levels of measurement involve numerical values that have a specific, equal distance between them, with ratio levels also having a meaningful zero point.

Question 14

The "highest" level of measurement is ________________.
A) nominal
B) ordinal
C) interval
D) ratio

Accepted Answer

The highest level of measurement is ratio, which has equal intervals between values and a true zero point. Nominal and ordinal levels of measurement have less quantitative information, and the interval level has equal intervals but no true zero point.

Question 15

The lowest level of measurement that has some sort of ranking is ____________.
A) nominal
B) ordinal
C) interval
D) ratio

Accepted Answer

Ordinal measurement involves ranking data according to some sort of criteria or attribute, without necessarily representing equal intervals between each rank or attribute. Therefore, it is the lowest level of measurement that has a ranking system. Nominal measurement has no ranking, interval measurement has equal intervals but no true zero point, and ratio measurement has a true zero point but may not necessarily involve ranking.

Question 16

The total group being studied is called the __________________.
A) discrete
B) sample
C) census
D) population

Accepted Answer

The term "population" is used to describe the entire group being studied, which could be a population of people, animals, plants, or objects. It is important to differentiate the population from the sample (choice B), which is a subset of the population that is chosen to participate in a study or experiment. A census (choice C) refers to collecting data on every member of the population, while "discrete" (choice A) is not a relevant term to describe the total group being studied.

Question 17

The Shell station on Portage Ave in Winnipeg is studying the number of litres of fuel that are sold on each day of the week. Records are available for the past year. How can the variable 'number of litres' be best described?
A) Discrete
B) Quantitative
C) Qualitative
D) Census
E) Nominal

Accepted Answer

The variable "number of litres" represents a quantity and can take on continuous values. Therefore, it is best described as a quantitative variable.

Question 18

The collection of all possible objects of interest is referred to as the ______________.
A) discrete
B) sample
C) census
D) population

Accepted Answer

The term "population" refers to the complete collection of all possible objects of interest. It includes all individuals, events, or measurements about which a researcher might want to draw a conclusion or make an inference. Options A, B, and C are not correct because "discrete" refers to a type of variable, "sample" refers to a subset of the population, and "census" refers to the process of gathering data from the entire population.

Question 19

The number of workers reporting sick in any particular week is considered to be _______________ data.
A) discrete
B) continuous
C) census
D) population

Accepted Answer

The number of workers reporting sick in any particular week is a countable, whole number, and thus discrete data. Continuous data would involve measurements that could take on any numerical value within a certain range, such as weight or time. Census refers to collecting data on an entire population, while population refers to the total group being studied.

Quiz 1: What Is Statistics

PlayTime Toys Inc. employs 50 people in the Assembly Department. Forty of the employees belong to a union and 10 do not. Five employees are selected at random to form a committee to meet with management regarding shift starting times. Would the 50 employees be considered a population or a sample?

Among the many classes held at your college or university, your statistics class has been selected for a study. This one class is referred to as a ______________.

The Shell station on Portage Ave in Winnipeg is studying the number of litres of fuel that are sold on each day of the week. Records are available for the past year. Is the variable 'number of litres' discrete or continuous?

Categorizing students as freshmen, sophomores, juniors and seniors is an example of the ______________ level of measurement.

The branch of statistics from which we draw conclusions from sample data is called _________________ statistics.

The Shell station on Portage Ave in Winnipeg is studying the number of litres of fuel that are sold on each day of the week. Records are available for the past year. How can the variable 'number of litres' be best described?

The branch of statistics in which data is collected, analyzed and presented in a concise format is called _____________ statistics.

A variable that can have any value within a specific range is called _________________.

If we test a small number of light bulbs from a large group, the small group is called a ______________.

The prime rate of interest is an example of a(n) __________________ level of measurement.

The "lowest" level of measurement is _____________.

Ranked data is an example of a(n) _______________ level of measurement.

The "highest" level of measurement is ________________.

The lowest level of measurement that has some sort of ranking is ____________.

The total group being studied is called the __________________.

The Shell station on Portage Ave in Winnipeg is studying the number of litres of fuel that are sold on each day of the week. Records are available for the past year. How can the variable 'number of litres' be best described?

The collection of all possible objects of interest is referred to as the ______________.

The number of workers reporting sick in any particular week is considered to be _______________ data.