Lab: One-Way ANOVA Quiz
The question sheet
Reveal any answer as you study-
According to the lab, how many prices of each food group should you record?
- Ten
- Twelve
- Five
- Eight
Reveal answer
Answer: Eight
Source evidence
PDF page 730: 1. Record the price per pound of eight fruits, eight vegetables, and eight breads in your local supermarket.
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Which three food groups are used in this lab?
- Fruits, vegetables, breads
- Fruits, meats, cereals
- Meats, dairy, grains
- Vegetables, fruits, snacks
Reveal answer
Answer: Fruits, vegetables, breads
Source evidence
PDF page 730: 1. Record the price per pound of eight fruits, eight vegetables, and eight breads in your local supermarket.
PDF page 730: Fruits Vegetables Breads
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ANOVA is a method of testing whether the means of how many populations are equal?
- Only one
- At most four
- Exactly two
- Three or more
Reveal answer
Answer: Three or more
Source evidence
PDF page 732: analysis of variance also referred to as ANOVA; a method of testing whether the means of three or more populations are equal The method is applicable if
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For ANOVA to apply, all populations of interest must be:
- Normally distributed
- Exponential
- Uniformly distributed
- Skewed right
Reveal answer
Answer: Normally distributed
Source evidence
PDF page 732: • all populations of interest are normally distributed,
PDF page 732: • all populations of interest are normally distributed,
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For ANOVA to apply, the populations must have equal:
- Ranges
- Sample sizes
- Standard deviations
- Medians
Reveal answer
Answer: Standard deviations
Source evidence
PDF page 732: • the populations have equal standard deviations, and
PDF page 732: • the populations have equal standard deviations,
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For ANOVA, samples from each population must be selected in what way?
- In equal fixed sizes only
- By convenience
- Systematically every fifth
- Randomly and independently
Reveal answer
Answer: Randomly and independently
Source evidence
PDF page 732: • samples (not necessarily of the same size) are randomly and independently selected from each population.
PDF page 732: • samples (not necessarily of the same size) are randomly and independently selected from each population, and
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The test statistic for analysis of variance is the:
- t statistic
- chi-square
- F ratio
- z score
Reveal answer
Answer: F ratio
Source evidence
PDF page 732: The test statistic for analysis of variance is the F ratio.
PDF page 732: The test statistic for analysis of variance is the F ratio
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One-way ANOVA involves how many independent and dependent variables?
- Three independent
- Two independent, one dependent
- One of each
- One independent, two dependent
Reveal answer
Answer: One of each
Source evidence
PDF page 732: • there is one independent variable and one dependent variable.
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ANOVA is also referred to as:
- Regression
- Chi-square test
- Correlation
- Analysis of variance
Reveal answer
Answer: Analysis of variance
Source evidence
PDF page 732: analysis of variance also referred to as ANOVA; a method of testing whether the means of three or more populations are equal The method is applicable if
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Variance is equal to the square of the:
- Standard deviation
- Median
- Range
- Mean
Reveal answer
Answer: Standard deviation
Source evidence
PDF page 732: variance mean of the squared deviations from the mean; the square of the standard deviation
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In the deviation x – x̄, the symbol x̄ represents the:
- Sample mean
- Variance
- Population size
- Data value
Reveal answer
Answer: Sample mean
Source evidence
PDF page 732: For a set of data, a deviation can be represented as x – where x is a value of the data and is the sample mean. The
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The sample variance divides the sum of squared deviations by:
- Twice the sample size
- Sample size minus 1
- The sample size
- Sample size plus 1
Reveal answer
Answer: Sample size minus 1
Source evidence
PDF page 732: sample variance is equal to the sum of the squares of the deviations divided by the difference of the sample size and 1.
Statistics
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