Show:
Probabilistic Sampling
Nonprobabilistic Sampling
Curves and Distributions
Frequency Distributions and Crosstabs
The Letter "R"
100
This is the main goal of probabilistic sampling techniques.
What is representativeness?
100
This is what makes nonprobabilistic sampling methods "nonprobabilistic".
What is an unknown likelihood of selection?
100
This is the most often used curve in statistics.
What is the normal curve/normal distribution?
100
A frequency distribution looks at this many variables at a time.
What is one variable?
100
This is a distinguishing feature of probabilistic sampling and requires a sampling frame.
What is randomness/random sampling?
200
This type of sampling is problematic when the sampling frame is in some non-random order.
What is systematic random sampling?
200
This type of sampling is a great way to break into a hard-to-reach population, but the people within the group have to be connected or at least know each other.
What is snowball sampling?
200
A Z-score value is expressed in terms of these.
What are standard deviations (from the mean)?
200
While raw numbers are useful within a crosstab, these are much more useful, especially when you have large sample sizes and/or more values of each variable (but be careful to interpret them the right way!).
What are percentages?
200
Crosstabs are one way to determine this between two variables.
What is a relationship?
300
If I randomly select classes from within UNG and then randomly select students from within those classes for my sample, I have engaged in this type of sampling.
What is multistage cluster sampling?
300
When a researcher comes up with a sample the easiest way they can, with no predetermined categories or criteria for inclusion, it would be considered this type of sampling.
What is availability sampling?
300
If a variable is normally distributed, it should have this percentage of cases between the mean and -1s.
What is 34%?
300
This is the type of frequency distribution we can use to help make it more readable when there are too many variable values.
What is a grouped frequency distribution?
300
Grouped frequency distributions are most commonly used with these types of variables.
What are ratio (and interval) variables?
400
If I know that the majority of the people in my target population are from the middle class, but I want my sample to be composed of 30 upper class, 30 middle class, and 30 lower class individuals, this is the type of sampling I would need to use.
What is disproportionate stratified sampling?
400
Like stratefied random sampling, this type of sampling uses a characteristic to ensure representativeness on that variable, but it lacks the randomness element of the probabilistic technique.
What is quota sampling?
400
If a variable is skewed, it lacks this feature of the normal curve.
What is symmetry?
400
This describes a crosstab that has more values in one variable than the other, which can make it a little more difficult to interpret.
What is a "non-square" table?
400
This fallacy is at the core of a great deal of sexist and racist stereotypes and involves taking information gathered at the individual level and applying it to entire groups.
What is the reductionist fallacy?
500
We can use a random sampling distribution to estimate this around our sample statistic, which tells us how sure we are that our sample statistic is the same as in the population.
What is a confidence interval?
500
If everyone in a population was exactly the same on all of the variables in your study, this would be unnecessary.
What is sampling?
500
If Lily scores a 50 on a test, and the average in her class is a 70 with a standard deviation of 10, what would Lily's standard score be?
What is -2.0 (2s below the mean)?
500
In a frequency distribution, this is the percentage of cases at each value, with the missing values removed.
What is the valid percent?
500
This is the defining feature of a Z-score, in terms of an individual score's position on the normal curve.
What is that it is relative to the group mean?