What is the mean annual income (INC1) of the participants?
statistics
Description
Statistics
Exercise I: Descriptive statistics
These weekly exercises provide the opportunity for
you to understand and apply statistical methods and analysis.
#1 Given the following values of the mean and median, state the
likely shape of the distribution:
(a) mean = 4, median =
4
_______________
(b) mean = 12, median =
2
_______________
(c) mean = 8, median =
18
_______________
(d) mean = 6, median =
14
_______________
(e) mean = 10, median =
3
_______________
(f) mean = 8, median =
8
_______________
#2. IQ scores have a mean of 100 and a standard deviation of
15. What percentile corresponds to an IQ score of 115? Explain the steps you
took to find the percentile.
#3. Which
measure of central tendency would you use for the following variables (mean,
median or mode). Explain your choice.
Gender:
_______________________________________________________
Class rank at a college:
__________________________________________________
Age of high school students:
________________________________________
A skewed income distribution (90% with incomes
under $150K; a few with incomes of several million):
____________________________________________________
Use SPSS and the data file found in syllabus
resources (DATA540.SAV) to answer the following questions. Round your
answers to the nearest dollar, percentage point, or whole
number.
#4. What
is the mean annual income (INC1) of the participants?
- $43,282
- $72,133
- $47,113
- $34,282
#5. What
percent of the participants are married (RELAT)?
- 28%
- 33%
- 51%
- 59%
#6. What is the modal level of relationship happiness (HAPPY)?
- Mixed
- Happy
- Very Happy
- Cannot be determined
#7. What is the median income of
the participants’ partners (INC2)?
- $24,212
- $28,945
- $32,000
- $48,975
#8. What percent
of the participants are age 51 or older?
- 4%
- 5%
- 7%
