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QNT 275 Week 1 Practice: Connect Knowledge Check

Complete the Week 1 Knowledge Check in Connect.

Daily temperature in a local community collected over a 30-day time period is an example of cross-sectional data.

True

False

Time series data are data collected at the same time period.

True

False

Primary data are data collected by an individual.

True

False

A random sample is selected so that every element in the population has the same chance of being included in the sample.

True

False

__________ consists of a set of concepts and techniques that are used to describe populations and samples.

Data mining

Traditional statistics

Random sampling

Time series analysis

A sequence of operations that takes inputs and turns them into outputs is a ____________.

statistical inference

process

random sampling

runs plot

Processes produce outputs over time.

True

False

_________ uses traditional or newer graphics to present visual summaries of business information.

Data mining

Descriptive analytics

Predictive analytics

Association learning

The number of sick days taken by employees in 2008 for the top 10 technology companies is an example of time series data.

True

False

A population is a set of existing units.

True

False

A(n) _____________ variable is a qualitative variable such that there is no meaningful ordering or ranking of the categories.

interval

ordinal

ratio

nominative

Judgment sampling occurs when a person who is extremely knowledgeable about the population under consideration selects the population element(s) that they feel is(are) most representative of the population.

True

False

A population is a set of existing units.

True

False

Processes produce outputs over time.

True

False

Primary data are data collected by an individual.

True

False

It is possible to use a random sample from a population to make statistical inferences about the entire population.

True

False

The term big data was derived from the use of survey data.

True

False

_________ uses traditional or newer graphics to present visual summaries of business information.

Predictive analytics

Data mining

Descriptive analytics

Association learning

An example of a qualitative variable is the mileage of a car.

True

False

Any characteristic of an element is called a ____________.

process

set

variable

D)census

A sequence of operations that takes inputs and turns them into outputs is a ____________.

random sampling

statistical inference

process

runs plot

Daily temperature in a local community collected over a 30-day time period is an example of cross-sectional data.

True

False

An example of a quantitative variable is the manufacturer of a car.

True

False

Cross-sectional data are data collected at the same point in time.

True

False

A quantitative variable can also be referred to as a categorical variable.

True

False

In an observational study, the variable of interest is called a response variable.

True

False

Data warehousing is defined as a process of centralized data management and retrieval.

True

False

Cross-sectional data are data collected at the same point in time.

True

False

Secondary data are data taken from an existing source.

True

False

Data that are collected by an individual through personally planned experimentation or observation are _____________.

quantitative data

variables

primary data

secondary data

A ratio variable has the following characteristic.

meaningful order

categorical in nature

predictable

inherently defined zero value