What are the four types of measurement scales- and define
nominal, ordinal, interval, ratio
100
What is the Mean, Median, Mode?
What are the measures of central tendency
100
Write the formula for the calculation of a mean when there are 5 numbers.
summation sign- x1-x5
and then divided by 5
100
x bar and a u
What is symbol for the mean of a sample and for the mean of a population
100
What is the test used when you are trying to determine if any variance between the mean of two groups was only caused by sampling error
t- test
200
parameters
What is the term used to describe measures of the population
200
What is the most powerful measure of central tendency?
Mean
200
What is the one symbol used in the formula for a standard deviation that is not used in the variance.
square root sign
200
What is symbol use to identify the probability when doing significance testing.
p
200
What is the type of measurement or type of data you need to conduct a parametric test?
interval or ratio
300
What does ANOVA stand for?
Analysis of Variance
300
Go to the board and write the notation for calculating a Mean for a group of 12 numbers.
Need to use I=1 to 12 to designate sum of 12 numbers and then the fact that you divide by 12.
300
What is the formula for the variance of a sample?
will illustrate
300
The number of data points in a sample.
What is n?
300
What is the test you use when you are looking at the means of three or more groups
anova
400
What is degrees of freedom = to
n-1
400
When considering descriptive statistics you can identify measures of central tendency and also measures of ______
dispersion or variability
400
What is the formula for the standard deviation of a population
will illustrate
400
Describe what the following illustrates
G1 O_ O
G2 O X O
there are two groups both were pretested and only one had a treatment before both were post tested.
400
What is the parametric test used for correlations
Pearson
500
What is alpha and what does it imply
Type one error in rejecting the null hypothesis-- you rejected a True null hypothesis
500
If it was indicated that a certain response was given x % of the time and it was also stated that the valid % for that same response was y % -- what could you calculate if you knew the total number of possible respondents
The number that actually responded.
500
How would you write the sum of three numbers squared and also the sum of three squared numbers-- will the be equal?
will illustrate
500
r
What is the symbol used for correlation?
500
Example
What is the mean and thus relationship between the level of confidence and the level of significance when testing.
.05 level of significance means .95 level of confidence