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Use the "Show Symbols" check box to view symbols needed to answer some questions.

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upper-case sigma
What is the name of the "Σ" symbol?

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population
"N" stands for the number of scores in a _____ .

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sample
"n" stands for the number of scores in a _____.

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population mean
"μ" is the symbol for the _____.

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population standard deviation
"σ" is the symbol for the _____.

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mu
What is the name of the "μ" symbol?

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lower-case sigma
What is the name of the "σ" symbol?

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raw score
"X" is a symbol meaning _____.

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sample mean
"M" is a symbol for the _____.

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Sum of Squared deviations
"SS" stands for _____.

ΣX, N
Fill in the blanks for population.

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N
population variance = SS/___

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sample standard deviation
"s" stands for for the _____.

ΣX, n
Fill in the blanks for sample.

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Degrees of freedom
_____ refers to the number of scores in a sample that are free to vary with no restriction.

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1
Complete the formula: df = n - ___

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mean
Variance is the _____ squared deviation.

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sample variance
"s²" stands for _____.

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n-1
s² is the same as SS/___

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N
σ² is the same as SS/___

n-1
Complete this formula for the sample standard deviation.

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z
Complete the formula: X = μ + ___σ

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s
Complete the formula: X = M + z___

standard error
This formula yields the _____.

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30
The distribution of sample means is almost perfectly normal if (1) the population from the which the samples are selected is a normal distribution and (2) the number of scores in each sample is relatively large, around ___ or more.

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alpha level
The ____ for a hypothesis is the probability that the test will lead to a Type I error.

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Type I
A ___ error occurs when a researcher fails to reject the alternative hypothesis.

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Type II
A ___ error occurs when a researcher fails to reject the null hypothesis.

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power, power
The ___ of a statistical test is the probability that the test will correctly reject a false null hypothesis. That is, ___ is the probability that the test will identify a treatment effect if one really exists.

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β
The power of a hypothesis test is equal to 1 - ___.

t-score
What will this formula yield?

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abscissa
The horizontal line on a frequency distribution table is called the _____.

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ordinate
The vertical line on a frequency distribution table is called the _____.

computational
This is the _____ formula.

sample mean
This symbol stands for the _____.

the standard deviation
What will this formula yield?

sample mean
This formula will allow you to locate a _____.

sample standard deviation
This formula yields _____.

sample variance
This formula yields _____.

estimated standard error
This formula yields _____.

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larger
The larger the variance, the _____ (smaller / larger) the error.

computational formula for SS
What is this?

Cohen's d
This is the formula for _____.

r²
This is the _____ formula.

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increases
Increasing the sample size _____ (decreases / increases) the likelihood of rejecting the null hypothesis.