BSIS STUDY GUIDE EXAM #1 QUESTIONS &
DETAILED ANSWERS PASSED 100%
1. The heights of women ages 18 to 24 have
Feedback: Correct.
a mean of 64.5 inches and a standard
Recall that a z-score
deviation of 2 inches.
indicates how many
Suppose you have a female friend that is 20
years old and is 66 inches tall. How many standard devi-ations a
standard deviations does she fall above the given value falls away
mean height for women age 18 to 24? from the mean. This
0.75 question is asking you
1 to calculate a z-score.
1.5 The woman's z-score
1.75 = (sam-ple -
mean)/standard de-
viation, so (66 -
64.2)/2 = 0.75.
2. quantitative data if numeric and
arithmetic operations
such as addi-tion
subtraction multipli-
cation and division can
be performed on
them
3. categorical data Data that consists of
names, labels, or
oth-er nonnumerical
values( can't perform
arithmetic
operations)
4. cross sectional data collected from several
en-tities at the same
,BSIS STUDY GUIDE EXAM #1 QUESTIONS &
DETAILED ANSWERS PASSED 100%
or approximately the
same point in time
5. time series data collected over several
time
periods
6. frequency distribution
,BSIS STUDY GUIDE EXAM #1 QUESTIONS &
DETAILED ANSWERS PASSED 100%
a summary of data that
shows the number(
fre-quency) of
observations in each of
several non over-
lapping classes aka
bins
details:
1. count how many times
each item appears
for observations
(categorical data)
aka frequency
7. relative frequency distribution Frequency of the
bin( # of times item
shows up in
set/ n( total number in set)
8. 3 steps for a frequency distribution with 1. determine the
quantitative data
number of non
overlapping bins
2. determine the
width of each bin
3. determine the bin
limits
9. bins created to show
, BSIS STUDY GUIDE EXAM #1 QUESTIONS &
DETAILED ANSWERS PASSED 100%
variability
in data
goal is to use enough bins to
show the variation in the
data but not so many
that contain only a few
data items
DETAILED ANSWERS PASSED 100%
1. The heights of women ages 18 to 24 have
Feedback: Correct.
a mean of 64.5 inches and a standard
Recall that a z-score
deviation of 2 inches.
indicates how many
Suppose you have a female friend that is 20
years old and is 66 inches tall. How many standard devi-ations a
standard deviations does she fall above the given value falls away
mean height for women age 18 to 24? from the mean. This
0.75 question is asking you
1 to calculate a z-score.
1.5 The woman's z-score
1.75 = (sam-ple -
mean)/standard de-
viation, so (66 -
64.2)/2 = 0.75.
2. quantitative data if numeric and
arithmetic operations
such as addi-tion
subtraction multipli-
cation and division can
be performed on
them
3. categorical data Data that consists of
names, labels, or
oth-er nonnumerical
values( can't perform
arithmetic
operations)
4. cross sectional data collected from several
en-tities at the same
,BSIS STUDY GUIDE EXAM #1 QUESTIONS &
DETAILED ANSWERS PASSED 100%
or approximately the
same point in time
5. time series data collected over several
time
periods
6. frequency distribution
,BSIS STUDY GUIDE EXAM #1 QUESTIONS &
DETAILED ANSWERS PASSED 100%
a summary of data that
shows the number(
fre-quency) of
observations in each of
several non over-
lapping classes aka
bins
details:
1. count how many times
each item appears
for observations
(categorical data)
aka frequency
7. relative frequency distribution Frequency of the
bin( # of times item
shows up in
set/ n( total number in set)
8. 3 steps for a frequency distribution with 1. determine the
quantitative data
number of non
overlapping bins
2. determine the
width of each bin
3. determine the bin
limits
9. bins created to show
, BSIS STUDY GUIDE EXAM #1 QUESTIONS &
DETAILED ANSWERS PASSED 100%
variability
in data
goal is to use enough bins to
show the variation in the
data but not so many
that contain only a few
data items
