Question
Elementary Statistics Project 3: Survey Data For this semester all students will use the same questions and data set for the Unit 3 Project. One
Elementary Statistics Project 3: Survey Data
For this semester all students will use the same questions and data set for the Unit 3 Project. One question
elicits a numeric value and the other question a non-numeric value (limited to two possible responses).
Thirty people were asked both of the questions. The responses were recorded in the attached table. You
will be using those responses to complete numbers 1-20.
Questions
Numeric: How much do you spend on gas each week?
Non-numeric: Do you think professional sports are fixed?
Use your numeric data values only to complete numbers 1-13:
1) Is the numeric variable qualitative or quantitative?
2) Is the numeric variable discrete or continuous?
3) Is the numeric variable at the nominal, ordinal, interval or ratio level of measurement?
4) List the mean ______________________________________________
5) List the standard deviation ____________________________________
6) List the sample size_______________________________
7) List the degrees of freedom_______________________________
8) List the standard error of the means_______________________________
9) Assume your data is normally distributed. What percentage of your data values fall within 1 standard
deviation of your sample mean? ___________
10) Assume your distribution is normal. Find the cutoff score for the top 20% of your data
values. ____________
11) Standardize the first score in the data set. ________________
12) Find the percentile for the first score in the data set. ________
13) Create a 90% confidence interval about the sample mean. ______________________
Use your non-numeric data values only to complete numbers 14-20:
14) Is the non-numeric variable quantitative or qualitative?
15) Is the non-numeric variable at the nominal, ordinal, interval or ratio level of measurement?
16) List the sample size____
17) List the sample proportion for the "yes" answers_______
18) List the mean assuming the "yes" answers make up the sample proportion_______
19) List the standard deviation assuming the "yes" answers make up the sample proportion._____
20) Create a 99% confidence interval about the sample proportion of "yes" answers. ______
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