Question

Which of the following two data tables represent an example of
the model with interactions and which one is without? For the model
without interactions ﬁnd µ,αi,βj,µij. Which classes interact in the
model with interactions? Which interaction is the strongest?

Model 1: 5 8 2 10

7 10 4 12

4 7 1 9

Model 2: 5 8 0 10

7 10 4 12

5 7 1 9

Answer #1

The data represent the time, in minutes, spent reading a
political blog in a day. Construct a frequency distribution using 5
classes. In the table, include the midpoints, relative
frequencies, and cumulative frequencies. Which class has the
greatest frequency and which has the least frequency?
19 29 21 0 6 4 16 25 23 1 7 2 9 14 25 27 9 12 15 15

The following data is
to be used to construct a regression model:
x
5
7
4
15
12
9
y
8
9
10
22
16
12
The value of the slope
is ____________.

The following data is to be used to construct a regression
model:
x
5
7
4
15
12
9
y
8
9
10
22
16
12
The value of SSE is ____________.

Create a graph to represent the data. What graph is best to
use?
Time (minutes)
Part A (Positive Control)
Part B
Part C
(Dark)
Part D
(Natural sunlight)
1
2
0
1
0
2
3
0
1
1
3
5
0
1
2
4
7
0
0
4
5
8
0
0
6
6
8
0
0
9
7
8
0
0
9
8
8
0
0
10
9
9
0
0
10
10
9
0
0
10
11
9...

An analyst is running a regression model using the following
data:
Y
x1
x2
x3
x4
x5
x6
4
1
5
0
-95
17
12
10
5
8
1
-27
7
10
32
1
7
0
-82
0
9
2
2
7
0
17
5
10
9
3
9
1
-46
5
11
Excel performs the regression analysis, but the output looks all
messed up: For example the F statistic cannot be computed, standard
errors are all zero, etc etc....

61. The following data
is to be used to construct a regression model:
x
5
7
4
15
12
9
y
8
9
10
22
16
12
The value of SSR is
____________.
124.986
121.116
118.182
112.157
110.136

#4. The following
data represent the daily supply (y in thousands of units) and the
unit price (x in dollars) for a product.
Daily Supply (y)
Unit Price (x)
5
2
7
4
9
8
12
5
10
7
13
8
16
16
16
6
4a). Compute and interpret the sample correlation coefficient.
use formula ( rxy= Sxy/SxSy )
4b). A student has to take 9 more courses before he can
graduate. If none of the courses are prerequisite to...

The data below represent the consumption of high- energy drinks
(in gallons) by adult Americans over a nine- year period.
Year
1
2
3
4
5
6
7
8
9
Consumption (gal)
10
11
11
12
13
14
15
15
13
a. Create a time series plot to display the data.
b. Comment on the trend of consumption of high energy
drinks.
c. Find the percent change from year 8 to year 9.

Problem 6 The following tables show the timing
for processes using two different scheduling algorithms based on
the table of process arrival times and burst times (All ties were
resolved using the arrival time). Using this information:
Calculate the average turnaround time for each algorithm. Show
your work.
Name the scheduling algorithm used to generate the timing
tables.
Process
Arrival Time
Burst Time
P1
0
4
P2
3.9
1
P3
2.9
3
P4
0.9
2
P5
1.9
4
Mystery Algorithm...

Construct a frequency distribution for the data using five
classes. Describe the shape of the distribution. The data set: Pick
Three Lottery Outcomes for 10 Consecutive Weeks
3 6 7 6 0 6 1 7 8 4
1 5 7 5 9 1 5 3 9 9
2 2 3 0 8 8 4 0 2 4

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