QMB 3250 EXAM UPDATED QUESTIONS WITH
100% CORRECT SOLUTIONS!!
Determine if each data set qualifies as a time series data set: Sales per month of cars at a
dealership
time series data
Determine if each data set qualifies as a time series data set: Monthly National
Unemployment Rate tracked for 10 years
time series data
Determine if each data set qualifies as a time series data set: Ranking of Top 100 Best
Places to Work
not time series
Determine if each data set qualifies as a time series data set: Ranking of SEC football teams
in the AP Poll
not time series
In simple exponential smoothing, which is smoother, a high alpha or a low alpha?
low
What are the key differences between trends and seasonal components in time series data?
Trends are a consistent pattern (either linear or curves) that approach either a negative or positive
direction; Seasonal Components are fluctuation in data that occur around the same time every
period.
, The closing prices for 5 days in early 2020 for a share of Disney Stock are reflected in the
table below:
Closing Price
144.83
144.62
143.88
145.20
144.32
Using JMP, find the predicted value for time period 3 using the simple exponential
smoothing method with custom alpha =0.4.
144.71
For a time series for simple moving average, a longer period will be ______ than a shorter
period, because longer periods respond more ______ .
smoother, slowly
For a time series for simple exponential smoothing, a shorter alpha is smoother than a
larger alpha.
true
If α is close to ______ the most recent value and historic values are weighted the same.
0.5
100% CORRECT SOLUTIONS!!
Determine if each data set qualifies as a time series data set: Sales per month of cars at a
dealership
time series data
Determine if each data set qualifies as a time series data set: Monthly National
Unemployment Rate tracked for 10 years
time series data
Determine if each data set qualifies as a time series data set: Ranking of Top 100 Best
Places to Work
not time series
Determine if each data set qualifies as a time series data set: Ranking of SEC football teams
in the AP Poll
not time series
In simple exponential smoothing, which is smoother, a high alpha or a low alpha?
low
What are the key differences between trends and seasonal components in time series data?
Trends are a consistent pattern (either linear or curves) that approach either a negative or positive
direction; Seasonal Components are fluctuation in data that occur around the same time every
period.
, The closing prices for 5 days in early 2020 for a share of Disney Stock are reflected in the
table below:
Closing Price
144.83
144.62
143.88
145.20
144.32
Using JMP, find the predicted value for time period 3 using the simple exponential
smoothing method with custom alpha =0.4.
144.71
For a time series for simple moving average, a longer period will be ______ than a shorter
period, because longer periods respond more ______ .
smoother, slowly
For a time series for simple exponential smoothing, a shorter alpha is smoother than a
larger alpha.
true
If α is close to ______ the most recent value and historic values are weighted the same.
0.5
