Chapter 1  Chapter 2  Chapter 3  Chapter 4 & 5  Chapter 5 & 6 

100What is a sample?
A researcher uses an anonymous survey to investigate the study habits of American college students. Based on the set of 56 surveys that were completed and returned, the researcher finds that these students spend an average of 4.1 hours each week working on course material outside of class. For this study, the set of 56 students who returned surveys is an example of a _________________.

100What is the f column?
The number of scores in the data set is found by summing this column of a frequency table.

100What is seven?
The mean for the following scores: {1, 6, 14}

100What is the standard deviation?
The average deviation of all scores from the mean.

100What is a zscore?
The type of score which describes how many standard deviations away from the mean a particular score is.

200What is 100?
The value of (ΣX)^2 or the following scores: {3, 0, 5, 2}

200What is y, then x?
In a frequency distribution graph, frequencies are presented on the ___axis and the scores (categories) are listed on the ___axis.

200What is the mode?
The measure of central tendency a researcher would use if she was investigating eye color for a sample of n = 50 people.

200What is zero?
The zscore which is used for the mean.

200What is 16/52 = 4/13?
p(king OR spades)

300What is an ordinal scale?
Using letter grades (A, B, C, D, and E) to classify student performance on an exam is an example of measurement on a(n) _______ scale of measurement.

300What is a positive skew?
The term used to describe the shape of a distribution in which the scores pile up on the lefthand side of the graph and taper off to the right.

300What is a positive skew?
The distribution of scores in which the median would be less than the mean, but greater than the mode.

300Who is Fernando?
Fernando consistently receives good grades in classes, while Esther receives high grades in some courses and low grades in others. _______________’s grades have a smaller standard deviation.

300What is "Column C" OR the "Column toward the tail"
The column in the Unit Normal Table which would help you find the proportion of scores in the lowest 10% of the graph.

400What is whether or not they received breakfast?
A recent study reports that elementary school students who were given a nutritious breakfast each morning had higher test scores than students who did not receive the breakfast. For this study, the independent variable is_______________.

400What is a histogram? OR What is a polygon?
The classrooms in the Psychology department are numbered from 100 to 120. A professor records the number of classes held in each room during the fall semester. If these values are presented in a frequency distribution graph, what kind of graph would be appropriate?

400What is yes?
Is possible for more than half of the scores in a distribution to have values greater than the mean?

400What is μ = 55 & σ = 10
A population of scores has μ = 50 and σ = 10. When 5 points are added to every score in the population, then the new mean and standard deviation would be ______.

400What is 28/35 = 4/5 = .80 = 80%
A jar contains 7 red Twizzlers and 29 black Twizzlers. Sandra draws one black Twizzler from the jar and eats it. When she reaches in to grab another, the probability of her randomly selecting a black Twizzler this time:

500What is the SIZE of the difference?
The additional information obtained when you measure a variable on an interval scale compared to a ordinal scale.

500What is platokurtic?
The shape of the distribution when the variability of scores (or standard deviation) is very high.

500What is 30?
For a perfectly symmetrical distribution with µ = 30, this is the mode.

500What is z = 0.75?
For a population with µ = 40 and σ = 8, the z score corresponding to X = 46.

500What is Math?
Last week, Luigi had exams in Math and in Art History. On the Math exam, the mean was µ = 30 with σ = 5, and Luigi had a score of X = 45. On the Art History exam, the mean was µ = 60 with σ = 8 and Luigi had a score of X = 68. The class which Luigi did better in.
