This preview shows pages 1–4. Sign up to view the full content.
ENGINEERING 126
Fall 2007
Written Exam 2
Name: __________________________________
Student ID: _______________________________
Division/Section:___________________________
INSTRUCTIONS:
Duration: 60 minutes
Keep your eyes on your own work!
Keep your work covered at all times!
1. Each student is responsible for following directions. Read carefully.
2. Excel and MATLAB commands, and Statistics equations are provided on
the next page.
3.
This exam consists of 7 pages (4 sheets front
AND
back). Check to be
sure that you have all of the pages.
4.
Write you name on the
answer sheet
.
5. Closed book and notes.
6. No calculators.
7.
Please make sure you return the
answer sheet
.
This preview has intentionally blurred sections. Sign up to view the full version.
View Full Document ENGR 126 – Fall 2007
EXAM II – Formula Sheet for Written Exam
Statistics Equations
∑
=


=
n
i
i
x
x
n
s
1
2
2
)
(
1
1
(
29
1
1
2
1
2
2


=
∑
∑
=
=
n
n
x
x
n
s
n
i
n
i
i
i
Linear Regression
∑
∑
=
=
=
+
n
i
i
n
i
i
y
bn
x
a
1
1
∑
∑
∑
=
=
=
=
+
n
i
i
i
n
i
i
n
i
i
y
x
x
b
x
a
1
1
1
2
∑
=

=
n
i
i
i
x
f
y
SSE
1
2
)]
(
[
∑
=

=
n
i
i
y
y
SST
1
2
]
[
SST
SSE
r

=
1
2
MATLAB Commands
+

*
/
^
=
.*
./
.^
%
' (transpose)
:
;
<
>
<=
>=
~
~=
= =
&

[ ] (
null
vector
)
( )
... (
ellipse
)
abs
acos
all
asin
atan
ans
any
axis
clc
clear
cos
csc
diary
diff
disp
else
elseif
end
exit
exp
factorial
figure
find
format
fprintf
function
grid
help
helpbrowser
hist
hold
i, j
if
Inf
input
legend
length
linspace
load
log
log10
loglog
logspace
lookfor
max
mean
median
min
NaN
ones
pi
plot
polyfit
polyval
prod
quit
rand
reshape
round
sec
semilogx
semilogy
sin
size
sort
sqrt
std
subplot
sum
tan
text
title
who
whos
xlabel
xor
ylabel
zeros
Excel Functions
+

*
/
^
=
$
ABS
AVERAGE
COS
EXP
LN
LOG10
MAX
MEDIAN
MIN
MODE
PI()
SIN
SQRT
STDEV
SUM
TAN
2
ENGR 126 Exam 2
October 22, 2007
Problem #1
(8
points) The following MATLAB code was written in a script file:
clear all
n=8;
if n>=10
disp('Range 3')
elseif n>=5
disp('Range 2')
elseif n>=0
disp('Range 1')
end
a
.
(4 points) When the MATLAB script is executed,
Range 2
is displayed.
Why doesn’t
Range 1
also display?
b
This preview has intentionally blurred sections. Sign up to view the full version.
View Full Document
This is the end of the preview. Sign up
to
access the rest of the document.
This note was uploaded on 09/14/2009 for the course ENGR 126 taught by Professor Oakes during the Fall '08 term at Purdue University.
 Fall '08
 Oakes

Click to edit the document details