Biostatistics Exam 1 2012
Test
1-
Monday February 3,2Ot4
Following the instructions for each problem and when necessary show os much work os necessary to justify your answers. Point values are listed next to each problem.
1. The Centers
for Disease Control and Prevention (CDC) lists causes of death in the United States during
2003:
v
a. ls
it reasonable to conclude that heart or respiratory disease were the cause of approximately 33% of
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pts)
L{f
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U.s. deaths in 2003? Yes or No and briefly explain. (5
t""F
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j', ,l Ot lt-' I
b. What percent of deaths were from causes not listed here? | lRts)
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j
,
t
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,
n appropriate graphical display for these data. (10 pts)
')!,
"
y;{-'{
'it '; 'i ''
Qtl't'l
:
br*L, lr, >*eJ^t--d
ffiD+e)
J'
\1
a
\}
.(s ptsl
distribution of average length of stay can best be described as
volue 5
5
6
7
8
9
10
11
I
_./ t
'
23
o2466
0000
7
7888899
45
46
0
3. Using the Stem and Leaf display above, find the Median and Mode of the data. (5 pts)
rY\
oc\a
yr&q$.
:+''
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o
*{,n-6.F 1, t
4. How hot does it get in Death Valley? The following data are taken from a study conducted by the
National Park System, of which Death Valley is a unit. The ground temperatures (oF) were taken from
May to November in the vicinity of Furnace Creek.
t46
L52
168
L78
L78
L78
^
Calculate the mean for these data. (4 pts)
-i
!-S9 =- lk{'.r,
-(/
6/
rinAthe median value for these data. (a pts)
tut+ \1iI
*eF
\"13
d
/
-\
,tn|the
l-l.t
mode of these data (if there is no mode then state "No Mode Exists"). {2 pts}
t
lt
V
5. For mallard
1-
Monday February 3,2Ot4
Following the instructions for each problem and when necessary show os much work os necessary to justify your answers. Point values are listed next to each problem.
1. The Centers
for Disease Control and Prevention (CDC) lists causes of death in the United States during
2003:
v
a. ls
it reasonable to conclude that heart or respiratory disease were the cause of approximately 33% of
Og &^'jrr-,Tf
\)
ffi{,rr',';-1n;"
ilii*rl hblf
pts)
L{f
: , b{ fn f ,n M f;et"Ctu"ri4,,, l\rlutrr,r ri.rr{r'. ..,i:, "';f i)[til**.,t
U.s. deaths in 2003? Yes or No and briefly explain. (5
t""F
q'"i \'t\ l"' 'ftltt
j', ,l Ot lt-' I
b. What percent of deaths were from causes not listed here? | lRts)
t"\;,-i
[\
.L
'."
y-.
u
j
,
t
" 1'$
{'r"'
\ " \ot- .f r 'r ---] -]r]", ,
,
n appropriate graphical display for these data. (10 pts)
')!,
"
y;{-'{
'it '; 'i ''
Qtl't'l
:
br*L, lr, >*eJ^t--d
ffiD+e)
J'
\1
a
\}
.(s ptsl
distribution of average length of stay can best be described as
volue 5
5
6
7
8
9
10
11
I
_./ t
'
23
o2466
0000
7
7888899
45
46
0
3. Using the Stem and Leaf display above, find the Median and Mode of the data. (5 pts)
rY\
oc\a
yr&q$.
:+''
'-J'
o
*{,n-6.F 1, t
4. How hot does it get in Death Valley? The following data are taken from a study conducted by the
National Park System, of which Death Valley is a unit. The ground temperatures (oF) were taken from
May to November in the vicinity of Furnace Creek.
t46
L52
168
L78
L78
L78
^
Calculate the mean for these data. (4 pts)
-i
!-S9 =- lk{'.r,
-(/
6/
rinAthe median value for these data. (a pts)
tut+ \1iI
*eF
\"13
d
/
-\
,tn|the
l-l.t
mode of these data (if there is no mode then state "No Mode Exists"). {2 pts}
t
lt
V
5. For mallard