Psychological Statistics

Question 1 of 12

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A researcher is interested in the eating behaviour of 5 year olds and selects a group to be tested in a research study. The group of 25 five year olds is a:

Select one of the following:

  • Sample

  • Statistic

  • Population

  • Parameter

Question 2 of 12

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A researcher is curious about the average IQ of registered voters in the state of Florida. The entire group of registered voters in Florida is an example of a:

Select one of the following:

  • Sample

  • Statistic

  • Population

  • Parameter

Question 3 of 12

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Although research questions typically concern a ______ research study typically examines a ______.

Select one of the following:

  • Sample, population

  • Statistic, sample

  • Population, sample

  • Parameter, Population

Question 4 of 12

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Statistical methods that use samples to answer general questions bout a population are called _______.

Select one of the following:

  • Parameters

  • Statistics

  • Descriptive statistics

  • Inferential statistics

Question 5 of 12

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Statistical techniques that summarise, organise and simplify data are classified as ________.

Select one of the following:

  • Population statistics

  • Sample statistics

  • Descriptive statistics

  • Inferential statistics

Question 6 of 12

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In an experiment, the researcher manipulates the _______ variable and measures changes in the ________ variable.

Select one of the following:

  • Population, sample

  • Sample, population

  • Independent, dependent

  • Dependent, independent

Question 7 of 12

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A researcher observed that preschool children playing in a red room showed more aggression than playing in a blue room. For this study, what is the independent variable?

Select one of the following:

  • Preschool children

  • Colour of the room

  • Amount of aggression

  • The children's play

Question 8 of 12

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In a study evaluating the effectiveness of a new medication designed to control high blood pressure, one sample of individuals is given the medicine and a second sample is given an inactive placebo. Blood pressure is measured for each individual. For this study, what is the dependent variable?

Select one of the following:

  • The medication

  • The placebo

  • Blood pressure

  • The individuals given the medication

Question 9 of 12

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A hypothesis test is ______.

Select one of the following:

  • A descriptive technique that allows researchers to describe a sample

  • A descriptive technique that allows researchers to describe a population

  • An inferential technique that uses the data from a sample to draw inferences about a population

  • An inferential technique that uses information about a population to make predictions about a sample

Question 10 of 12

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The null hypothesis _______.

Select one of the following:

  • States that the treatment has no effect

  • Is denoted by the symbol H1

  • Is always stated in terms of sample statistics

  • All of the choices are correct

Question 11 of 12

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The null hypothesis ______.

Select one of the following:

  • Concerns a population with an unknown mean

  • Is denoted by the symbol H0

  • Generally states that there is no effect, no change or no difference

  • All of the other choices are correct

Question 12 of 12

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The final step of hypothesis testing is to ______.

Select one of the following:

  • Locate the values associated with the critical region

  • Make a statistical decision about H0

  • Collect the sample data and compute the test statistic

  • State the hypotheses and select an alpha level

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Psychological Statistics

charlie_joseph
Quiz by , created over 2 years ago

Quiz on Psychological Statistics, created by charlie_joseph on 17/03/2014.

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Created by charlie_joseph over 2 years ago
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