ch 1 & 2 Intro &scaling  ch 3 & 4 frequency & mesaures of central tendency  ch 5 Measures of varibity  ch 6 Zscore  ch 10 Hypothesis testing 

100What is nominal data
The scale of measurement that is categorical with no properties of the real number system.

1004
Find the mode of the following data set.
8, 7, 2, 4, 4, 8, 2, 4, 6, 5, 7, 3, 9, 4, 5, 4, 7

100summarize and describe the extent to which scores in a distribution differ from one another.
Measures of variability are used to

100compare and interpret scores from virtually any distribution.
The zscore transformation is a useful statistical tool because it enables statisticians to

100Type I error
Stating that the null was false when it was indeed true.

200population
The entire group of interest is called the....

200Normally distributed
When a distribution’s mode = median = mean, it is said to be

200It equals zero
What is the problem with calculating the average of the deviations?

200the raw score is equal to the mean
A zscore of zero always means that

200Type II error
Lower alpha increases the chances of making this error.

300an inferential statistic
In order to make statements about the population from information obtained from a sample, we must use

300What is hypothesis?
Determines the direction of the study; its measures, scaling and thereby statistical analysis. It is the prediction being made or the question being researched.

300the wider the spread of the scores
In general, the larger the value of the standard deviation

3000; 1
The mean of a zscore distribution is always __________, and the standard deviation is always __________.

300What is Accept the Null?
What one does when the obtained probability is larger than alpha.

400dependent variable
The variable that is measured as an experiment is being carried out is called the

400What are inferential statistics?
When sample data is used to generalize to other samples within the population, what type of statistics is used?

400Estimating the population (N1)
If you were interested in determining the variance for a sample nnot tested, which equation would you use?

400What does the standard deviation mean?
Daily double!!!!! Place you bid for the mystery question....

400A one tail
When a hypothesis states a direction to its perdiction, it is called...

500Normal distribution
A distribution that is symmetrical, that has as its middle score the score with the highest frequency, and that has decreasing frequencies as scores move further from the middle score is called a(n) __________ distribution.

5003
In a simple frequency distribution constructed from the data 9, 8, 8, 7, 7, 7, 5, 5, 4, 4, 4, 4, 3, 2, 2, 1, 0, 0, the score “7” would have an f of

500when you knew the entire population.
when would you use the population standardard deviation?

5003
Alicia scored a 70 on her psychology quiz, but the class as a whole averaged a 40. If the standard deviation was 10, what was Alicia’s zscore?

500Confounding
Even if statistical significance is found, one must rule out other variables having possibly impacted the results. What hypothesis is considered here?
