1. What type of scale are we using when we ask the gender
a. Ratio scale
b. Ordinal scale
c. Multiple-item scale
d. Interval scale
e. Nominal scale
2. What type of scale is the following?
What was your annual gross income before taxes last year?
1. Statistics is an art and technique for systematically:
a. Recording data.
b. Analyzing data.
c. Interpreting data.
d. Collecting data.
e. All of these.
2. A measure of any attribute, belief, or attitude, taking data from the entire
population is referr
Data and Data Sets
Data can be referred as bits of information
Data are the facts and figures collected, analyzed,
and summarized for presentation and interpretation.
Nominal Scale: Has a property of description to categorize the data.
Ordinal Scale: Has
Coefficients Stan Error t Stat P-value L 95% U 95% L 95.0% U 95.0%
Intercept -18939.758 8389.570205 -2.257536152 0.0254788 -35522.37332
-2357.14276 -35522.37332 -2357.142759
Gender -13139.208 3799.152608 -3.458457625 0.0007147 -20648.51863 -5629.89799
Advance Statistical Methods
Is there a statistically significant difference (Alpha = .10) in the variance of the weights
that were reported by the women versus the variance of the weights that were reported
by the men who responded to the ISS?
Using the sample data provided in the ISS Data Set, show and discuss the descriptive
statistics that describes the projected salaries that were reported in the Initial Student
Projected Salaries Mean 57038.46154 Standard Error 1635
A September 2012 Gallop poll was taken to determine national political party affiliation.
Results for the three major parties are listed below.
Republican 27% Independent 36% Democrat 35%
Do the data in the ISS support the notion that Wayne St
Based on the sample data collected in the Student Survey, is there a difference in the
expected salaries upon graduation as reported by women when compared to the
expected salaries reported by men? Alpha = .05
H0: Expected Salaries for Women -
1. In a Census study, inferences are drawn from the data collected through,
a. Few units (Sample)
b. Half body of units
c. Entire body of units (Population)
d. None of the above
e. All of the above
2. The true population mean value for a variable, is know
If you determined that there is a difference between Expected Salary based on Major
(from Question #9), conduct pair-wise comparisons to find where the differences are.
The following chart will use the Fisher-LSD pair-wise comparison method to find where