Statistics-Ch. 1

Pataasin ang iyong marka sa homework at exams ngayon gamit ang Quizwiz!

In an experiment that looks at the effect of different teaching methods on student learning, the independent variable is... -the number of students involved. -scores on a standardized exam. -teaching method. -inherently unknowable.

teaching method

Which of the following is a defining characteristic of experiments? -Laboratory setting -Representative groups -Biological measures -Manipulations

Manipulations

A univariate analysis typically focuses on... -cause and effect. -one variable at a time. -un-varying values. -a uniform group of participants.

one variable at a time

A question that asks whether a person believes they are more creative, less creative, or just as creative as other people is at the _____ level of measurement.

ordinal

A sample is part of a larger...

population

A variable that records how many seconds it take for a person to spell a word backwards is at the _____ level of measurement.

ratio

For a study to be considered an experiment, it must have... -a sample of at least 30 participants. -ratio level measurements on all variables. -a manipulation. -no more than two variables.

A manipulation

Which is bigger: a sample or a population?

A population

If a web marketer compares the effectiveness of two online ads in getting clicks by gathering data from 3 million Internet shoppers, the population of interest is... -all shoppers. -the two online ads. -the 3 million Internet shoppers. -all Internet shoppers.

All internet shoppers

If the number of games a team has lost in a season is subtracted from the number of games that they won in that season, the resulting variable would be at the _____ level of measurement.

Interval

Temperature in celsius or Fahrenheit (but not Kelvin) is measured at which level of measurement?

Interval

A question that asks a person which religion (if any) they identify with is at the _____ level of measurement.

Nominal

A variable that classifies people into racial or ethnic groups is what level of measurement?

Nominal

If a person's sex is coded as Male = 0 or Female = 1, then that variable is at the _____ level of measurement.

Nominal

If a person's sex is coded as Male = 1 or Female = 2, then that variable is at the _____ level of measurement.

Nominal

If a person's sex is recorded as "Male" or "Female," then that variable is at the _____ level of measurement.

Nominal

The only level of measurement that does not place scores or categories into order (and is therefore the lowest level of measurement) is the _____ level of measurement.

Nominal

The respondent's gender is typically recorded as a(n) _____ variable.

Nominal

A question that asks how many times a person attends religious services each year is at the _____ level of measurement.

Ratio

The amount of time that a person spends on social media each week in minutes is a(n) _____ variable.

Ratio

The highest level of measurement (i.e., the one that contains the most information) is the _____ level of measurement.

Ratio

The number of students enrolled in a school each year is an example of which level of measurement?

Ratio

Which level of measurement has a true zero point?

Ratio

A bivariate analysis typically focuses on... -two participants at a time. -causal inference. -the association of two variables. -symmetrical distributions.

The association of two variables

The variable that is measured as the outcome in an experiment is called the _____ variable.

dependent

Inferential statistics are typically contrasted with _____ statistics.

descriptive

A question that asks a person how strong their motivations for religious participation are using a 1-7 rating scale is at _____ level of measurement.

either the ordinal or the interval

In an experiment, the variable that the researcher manipulates is called the _____ variable.

independent

If a researcher is able to survey 99% of all students enrolled in statistics classes at a college, then that researcher has gathered data from a(n)...

sample

A population can never be... -made up people of just one sex. -accurately described. -smaller than one of its samples. -larger than one of its samples.

smaller than one of its samples


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