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Homework 1: (50 points in total)
Excel macro worksheet:
Q1 How many participants participated in this experiment (total)? Divide them into two
conditions (Cond 1 and Cond 2) and the two versions (version 1 and version 2) and fill
out the table in the excel sheet. Use an Excel macro to facilitate the task. (5 points)
Q2. Carry out the following with your own Excel macro. (5 points)
For each participant (Sub ID column), copy their response time cells (column F) and
paste them horizontally with respect to each subject ID in column A.
Repeat this for all participants.
Your answer should look like below:
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
Cond 1
Cond 1
Cond 1
Cond 1
Cond 1
Cond 1
Cond 1
Cond 1
Cond 1
Cond 1
Cond 1
Cond 1
Cond 1
Cond 1
Cond 1
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
high
high
high
high
high
medium
medium
medium
medium
medium
low
low
low
low
low
4273
6749
7013
2771
3973
3787
2338
4204
2102
2512
1924
1918
3050
2909
2405
4273 6749 7013 2771 3973 3787 2338 4204 2102
Hint:
Use the “paste special” function” from “Edit” menu, and select
“transpose”
While doing that, record “macro” (select Tools/Macros/Record New
Macro from the menu bar).
Excel Graphics
Q3. Draw the following two functions using an excel graphic function. (10 points)
y
1
(1  exp( 4  0.1x))
y
1
(1  exp( 5.8  0.1x))
-- (1)
-- (2)
The range of x should be (0, 100).
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Hints:
1. To make a graph, use Excel Graphics (see below) and a x-y scatter plot
in it.
2. For the exponential function, use “=exp()”
3. Divide x into equally spaced bins
VBA Programming
Program 1. Create a procedure that takes K (integer) as a variable, and
print N samples of random integers ranging from 1 to K in Program 1
worksheet. Test your program with N = 100 and K=20. Use
RandomInteger() to produce a random integer ranging from 1 to K (see
below). Print the result on excel worksheet “Program 1.” Your program
should look like this: (10 points)
Private sub RandomK ()
Dim K as integer
Dim N as integer
K=xxx
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N=xxx
‘ write your program
end sub
Hint: use the following function to generate a random integer.
Private Function RandomInteger(thisRange As Integer) As Integer
Dim MyValue
Randomize
RandomInteger = Int((thisRange * Rnd) + 1)
'create a random number between 1 and thisRange
End Function
Program 2. Write a procedure that randomly assigns 4 conditions, a1, a2,
a3, and a4, to 100 subjects. Print the result on the excel sheet “Program
2” with subject ID numbers in column A and their conditions in column B.
(10 points)
Hint:
Use RandomInteger() and a if then control function
Program 3. Write a procedure that randomly assign 4 conditions, a1, a2,
a3, and a4, to 100 subjects with a restriction that each condition receives
the same number of subjects (a1=a2=a3=a4=25). (10 points)
Private Sub PrintRandomSample1 ()
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‘create random integers ranging from 1 to K, L times, and print the
random samples in the row 1 to L.
End sub