Question 12 pts

In the ____________ level of measurement, there is an absolute zero point.

Ordinal

Ratio

Interval

Nominal

Flag this QuestionQuestion 22 pts

A ______________ consists of all subjects that are being studied.

Sample

Polynomial

Population

Variable

Flag this QuestionQuestion 32 pts

____________ statistics is used to make ____________.

Inferential ———— Predictions

Discrete ———— Samples

Continuous ———— Populations

Descriptive ———— Variables

Flag this QuestionQuestion 42 pts

A ____________ variable assumes numerical values that are ____________.

Continuous ———— Negative

Discrete ———— Separated by gaps

Categorical ———— Stratified

Qualitative ———— Inferential

Flag this QuestionQuestion 52 pts

What level of measurement classifies data into categories with no order or ranking ?

Interval

Nominal

Ratio

Ordinal

Flag this QuestionQuestion 62 pts

Rating the quality of a restaurant is an example of the ____________ level of measurement.

Interval

Ratio

Nominal

Ordinal

Flag this QuestionQuestion 72 pts

Classifying books as novels, poetry and dictionaries is an example of the ____________ level of measurement.

Ordinal

Interval

Nominal

Ratio

Flag this QuestionQuestion 82 pts

A variable that records the hair colors of several persons would be an example of a ____________ variable.

Numerical

Discrete

Categorical

Continuous

Flag this QuestionQuestion 92 pts

Based on data from the past, a person expects to pay $ 75 / month in electricity this year. This is an example of ____________ statistics.

Descriptive

Inferential

Continuous

Discrete

Flag this QuestionQuestion 102 pts

Select the correct statement.

A population is a portion of the sample.

Sample and population are the same thing.

Sample and population are disjoint (have no elements in common).

A sample is a portion of the population.

Flag this QuestionQuestion 112 pts

In ____________ sampling, each element of the population has ____________ chance of being selected.

Systematic ———— Negative

Random ———— Equal

Cluster ———— Proportional

Discrete ———— Different

Flag this QuestionQuestion 122 pts

What type of sampling technique is being employed if the country is divided into economic classes and a sample is randomly chosen from each class to be surveyed ?

Systematic sampling

Stratified sampling

Random sampling

Cluster sampling

Flag this QuestionQuestion 132 pts

In an experimental study, the _______________ variable is manipulated to see if that changes the _______________ variable.

Qualitative ———— Quantitative

Explanatory ———— Response

Continuous ———— Discrete

Positive ———— Negative

Flag this QuestionQuestion 142 pts

Suppose that some students are lined up in a row and you select the students in even positions.

This is an example of ____________ sampling.

Systematic

Cluster

Random

Stratified

Flag this QuestionQuestion 152 pts

A confounding variable is:

The same as the explanatory variable.

An extraneous variable that has not been controlled.

A type of categorical variable.

The same as the response variable.

Flag this QuestionQuestion 162 pts

In an ____________ study the researcher ____________ variables.

Unbiased ———— Calculates discrete

Observational ———— Does not manipulate any

Experimental ———— There are no

Empirical ———— Samples all categorical

Flag this QuestionQuestion 172 pts

You ask 4 persons about a new movie and they all liked it; then you conclude that the movie was a big success. This is an example of:

Loaded question.

Conflict of interests.

Misleading graph.

Small sample size

Flag this QuestionQuestion 182 pts

What type of sampling is being used if Florida is divided into counties and all the persons from some randomly selected counties are surveyed ?

Cluster sampling

Convenience sampling

Systematic sampling

Stratified sampling

Flag this QuestionQuestion 192 pts

The amount of money in a bank account is an example of the ____________ level of measurement.

Nominal

Ratio

Interval

Ordinal

Flag this QuestionQuestion 202 pts

Which of the following variables is continuous ?

The number of cakes in a bakery

The flavors of the cakes in a bakery

The colors of cakes in a bakery

The baking times of the cakes in a bakery

Flag this QuestionQuestion 212 pts

Descriptive Statistics:

Branch of Statistics that is used to collect, organize and summarize data from a sample.

Branch of Statistics that makes inferences, generalizations or predictions about a population based on sample data.

Branch of Mathematics that studies polynomials.

Branch of Mathematics that studies random phenomena.

Flag this QuestionQuestion 222 pts

Inferential Statistics:

Branch of Statistics that is used to collect, organize and summarize data from a sample.

Branch of Mathematics that studies polynomials.

Branch of Statistics that makes inferences, generalizations or predictions about a population based on sample data.

Branch of Mathematics that studies random phenomena.

Flag this QuestionQuestion 232 pts

Population:

Number of persons that inhabit a country.

Number of variables in an experiment.

Set of all organisms that live in a certain geographical area.

Complete collection of all subjects of interest in a statistical study.

Flag this QuestionQuestion 242 pts

Sample:

Specimen taken from a tissue.

Excerpt taken from a musical recording.

Subset of the population.

Piece of mineral.

Flag this QuestionQuestion 252 pts

Observational study:

Type of study in which the researcher deliberately influences the phenomenon or process under study.

Type of study in which the researcher only observes, collects data, and draws conclusions, without interfering with the variables of interest.

Type of study in which the researcher manipulates the input variable(s) to try to determine the effect on the output variable(s).

Type of study in which the researcher predicts the future.

Flag this QuestionQuestion 262 pts

Categorical Variable:

Variable whose values have an intrinsic ordering.

Variable whose values are whole numbers.

Variable whose values are names or labels.

Variable whose values are real numbers.

Flag this QuestionQuestion 272 pts

Continuous Variable:

Variable whose values are not numerical.

Variable that can only assume a finite number of values.

Variable whose values can be any real number in a certain interval.

Variable whose values cannot be ordered.

Flag this QuestionQuestion 282 pts

Stratified Sampling:

Sampling technique that consists in subdividing the population into homogeneous, exhaustive and non-overlapping subgroups, and then drawing a sample from each subgroup.

Sampling technique that consists in dividing the population into exhaustive and non-overlapping subgroups, then randomly selecting some of those subgroups and choosing all the members from those selected subgroups.

Sampling technique that consists in ordering the population in a list, choosing a starting point and then selecting every k-th element in the list.

Sampling technique that consists in selecting those members of the population that are easy to access.

Flag this QuestionQuestion 292 pts

Interval Level of Measurement:

Level of measurement in which the data consists of categories with no intrinsic order.

Level of measurement in which the data has intrinsic order, differences are meaningful, but ratios are meaningless. There is no absolute zero.

Level of measurement in which the data has intrinsic order, but differences are meaningless.

Level of measurement in which the data has intrinsic order, and both differences and ratios are meaningful. There is an absolute zero.

Flag this QuestionQuestion 302 pts

Ratio Level of Measurement:

Level of measurement in which the data consists of categories with no intrinsic order.

Level of measurement in which the data has an intrinsic order, and both differences and ratios are meaningful. There is an absolute zero.

Level of measurement in which the data has an intrinsic order, but differences are meaningless.

Level of measurement in which the data has an intrinsic order, differences are meaningful, but ratios are meaningless. There is no absolute zero.

Flag this QuestionQuestion 312 pts

In ____________ studies, the group that receives the treatment being tested is called the ____________ group.

Stratified ———— Irregular

Experimental ———— Treatment

Categorical ———— Regular

Observational ———— Control

Flag this QuestionQuestion 322 pts

A professor reviews the records of all his students and finds that 90 % of them passed the Final Exam. This number is a ____________.

Sample

Statistic

Population

Parameter

Flag this QuestionQuestion 332 pts

____________ is the selection of a ____________ from a ____________.

Sampling ———— Sample ———— Population

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