642469
Description
Quiz by Charlotte Joseph, updated more than 1 year ago
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Created by Charlotte Joseph
almost 11 years ago
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Question 1
Question
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:
Answer
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Sample
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Statistic
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Population
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Parameter
Question 2
Question
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:
Answer
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Sample
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Statistic
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Population
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Parameter
Question 3
Question
Although research questions typically concern a ______ research study typically examines a ______.
Answer
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Sample, population
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Statistic, sample
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Population, sample
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Parameter, Population
Question 4
Question
Statistical methods that use samples to answer general questions bout a population are called _______.
Answer
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Parameters
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Statistics
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Descriptive statistics
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Inferential statistics
Question 5
Question
Statistical techniques that summarise, organise and simplify data are classified as ________.
Answer
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Population statistics
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Sample statistics
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Descriptive statistics
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Inferential statistics
Question 6
Question
In an experiment, the researcher manipulates the _______ variable and measures changes in the ________ variable.
Answer
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Population, sample
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Sample, population
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Independent, dependent
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Dependent, independent
Question 7
Question
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?
Answer
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Preschool children
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Colour of the room
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Amount of aggression
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The children's play
Question 8
Question
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?
Answer
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The medication
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The placebo
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Blood pressure
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The individuals given the medication
Question 9
Question
A hypothesis test is ______.
Answer
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A descriptive technique that allows researchers to describe a sample
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A descriptive technique that allows researchers to describe a population
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An inferential technique that uses the data from a sample to draw inferences about a population
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An inferential technique that uses information about a population to make predictions about a sample
Question 10
Question
The null hypothesis _______.
Answer
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States that the treatment has no effect
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Is denoted by the symbol H1
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Is always stated in terms of sample statistics
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All of the choices are correct
Question 11
Question
The null hypothesis ______.
Answer
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Concerns a population with an unknown mean
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Is denoted by the symbol H0
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Generally states that there is no effect, no change or no difference
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All of the other choices are correct
Question 12
Question
The final step of hypothesis testing is to ______.
Answer
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Locate the values associated with the critical region
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Make a statistical decision about H0
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Collect the sample data and compute the test statistic
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State the hypotheses and select an alpha level
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