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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