Introductory Statistics
The variable which is controlled by the researcher.
What is the independent variable?
These are the four scales of measurement.
What are nomial, ordinal, interval, and ratio?
This is the Greek letter for "the sum of".
What is (capital) sigma?
This kind of frequency distribution graph shows the frequencies as bars, with no space between adjacent bars.
What is a histogram?
This measure of central tendency is the average score.
What is the mean?
The variable which is measured.
What is the dependent variable?
This scale of measurement is used for categorical data.
What is the nominal scale?
This letter is used to represent the sample size.
What is n or N?
This type of frequency distribution displays numerical frequencies for values of X.
What is a frequency distribution table?
This measure of central tendency is found by finding the midpoint of the variable.
Used to ensure that the sample is representative of the population.
What is random sampling?
This scale of measurement is used for distance and time.
What is the ratio scale?
This letter is used to represent the sample mean.
What is M or Xbar?
This type of frequency distribution "leans" to the left or to the right.
What is a skewed distribution?
This measure of central tendency is 4 for the following group of numbers: 1,1,2,2,3,4,4,4,4.
What is the mode?
Statistical methods that streamline and summarize large datasets such as measuring central tendency or creating frequency distributions.
What is descriptive statistics?
This scale of measurement is used for labeling which level in school a student is at (i.e., freshman, sophomore, junior, senior).
What is the ordinal scale?
This letter is used to represent the sample standard deviation.
What is s?
This type of frequency distribution figure would be used for nominal data.
What is a bar graph?
The measure of central tendency you would want to use for a skewed distribution.
What is the median?
The average age of seniors in college.
What is a parameter?
Rating scales are an example of this type of scale of measurement.
What is the interval scale?
This greek symbol is used to represent the population variance.
What is (lowercase) sigma squared?
DAILY DOUBLE!!!!!!!!!!!
A special type of distribution that occurs frequently with population data that is symmetrical with an even number of people on either side of the mean.
The value of the mean if you add 25 to every score in the sample.
What is M (the mean) +25?