MGSC 291 Exam 1 questions with complete solutions graded A+
1. descriptive statistics the collection,
organization,
summarization, and
pre- sentation of data
2. inferential data information that not
only characterizes a
particu- lar group or
situation but also
allows researchers to
**draw conclusions**
about other groups or
situations
3. parameter number used to
describe the
POPULATION
4. statistic number calculated from a
SAMPLE
5. t/f a statistic is used to estimate a parameter true
6. when do we collect a sample? when the population is to
large
7. variable a characteristic of an indi
vidual or item in the pop-
ulation whose value varie
from individual to
individual from one time
period to the next
8. t/f a variable can take numbers but not false, it can take both
words as its values
9. time series data variable that is
measured at regular
intervals over time
-intervals: EQUALLY
1/
45
, MGSC 291 Exam 1 questions with complete solutions graded A+
SPACED points in time
(hourly, daily, monthly,
quar- terly, annual etc)
10. t/f time series is a sequence of data true
2/
45
, MGSC 291 Exam 1 questions with complete solutions graded A+
11. t/f line graphs allow easy analysis of true
trends in time series
12. what is time series data typically line graph and
graphed as? sometimes a bar chart
13. cross sectional data when a characteristic is
measured on many
sub- jects at the SAME
time point (or same
time frame)
-gives a "snapshot" of
the data at the given
point in time
14. t/f data can be cross sectional if it is false, taken at the same
mea- sured at different points in time time
15. data warehouse a repository of
historical data that are
organized by subject to
support decision
makers in the
organization
16. t/f variables are the columns of the data set true
17. t/f units (individuals) are the rows of the true
data set
18. quantitative variables numbers that have
magni- tude
19. are discrete and continuous variables quantitative
quan- titative or qualitative?
20. Discrete vs. Continuous Exclusive categories
(counted) vs infinite
number of values
3/
45
, MGSC 291 Exam 1 questions with complete solutions graded A+
(measured)
21. Discrete variable example
4/
45
1. descriptive statistics the collection,
organization,
summarization, and
pre- sentation of data
2. inferential data information that not
only characterizes a
particu- lar group or
situation but also
allows researchers to
**draw conclusions**
about other groups or
situations
3. parameter number used to
describe the
POPULATION
4. statistic number calculated from a
SAMPLE
5. t/f a statistic is used to estimate a parameter true
6. when do we collect a sample? when the population is to
large
7. variable a characteristic of an indi
vidual or item in the pop-
ulation whose value varie
from individual to
individual from one time
period to the next
8. t/f a variable can take numbers but not false, it can take both
words as its values
9. time series data variable that is
measured at regular
intervals over time
-intervals: EQUALLY
1/
45
, MGSC 291 Exam 1 questions with complete solutions graded A+
SPACED points in time
(hourly, daily, monthly,
quar- terly, annual etc)
10. t/f time series is a sequence of data true
2/
45
, MGSC 291 Exam 1 questions with complete solutions graded A+
11. t/f line graphs allow easy analysis of true
trends in time series
12. what is time series data typically line graph and
graphed as? sometimes a bar chart
13. cross sectional data when a characteristic is
measured on many
sub- jects at the SAME
time point (or same
time frame)
-gives a "snapshot" of
the data at the given
point in time
14. t/f data can be cross sectional if it is false, taken at the same
mea- sured at different points in time time
15. data warehouse a repository of
historical data that are
organized by subject to
support decision
makers in the
organization
16. t/f variables are the columns of the data set true
17. t/f units (individuals) are the rows of the true
data set
18. quantitative variables numbers that have
magni- tude
19. are discrete and continuous variables quantitative
quan- titative or qualitative?
20. Discrete vs. Continuous Exclusive categories
(counted) vs infinite
number of values
3/
45
, MGSC 291 Exam 1 questions with complete solutions graded A+
(measured)
21. Discrete variable example
4/
45
