8.30 Checking Conditions for Body Mass Gain The mice in the study had body mass measured through- out the study. Computer output showing body mass gain (in grams) after 4 weeks for each of the three light conditions is shown, and a dotplot of the data is given in Figure 8.6. Level DM 393 LD LL N 10 8 9 Mean 7.859 5.926 11.010 StDev 3.009 1.899 2.624 (a) In the sample, which group of mice gained the most, on average, over the four weeks? Which gained the least? (b) Do the data appear to meet the requirement of having standard deviations that are not dramat- ically different? (c) The sample sizes are small, so we check that the data are relatively normally distributed. We see in Figure 8.6 that we have no concerns about the DM and LD samples. However, there is an out- lier for the LL sample, at 17.4 grams. We proceed as long as the z-score for this value is within +3. Find the z-score. Is it appropriate to proceed with ANOVA? (d) What are the cases in this analysis? What are the relevant variables? Are the variables cate- gorical or quantitative?
8.30 Checking Conditions for Body Mass Gain The mice in the study had body mass measured through- out the study. Computer output showing body mass gain (in grams) after 4 weeks for each of the three light conditions is shown, and a dotplot of the data is given in Figure 8.6. Level DM 393 LD LL N 10 8 9 Mean 7.859 5.926 11.010 StDev 3.009 1.899 2.624 (a) In the sample, which group of mice gained the most, on average, over the four weeks? Which gained the least? (b) Do the data appear to meet the requirement of having standard deviations that are not dramat- ically different? (c) The sample sizes are small, so we check that the data are relatively normally distributed. We see in Figure 8.6 that we have no concerns about the DM and LD samples. However, there is an out- lier for the LL sample, at 17.4 grams. We proceed as long as the z-score for this value is within +3. Find the z-score. Is it appropriate to proceed with ANOVA? (d) What are the cases in this analysis? What are the relevant variables? Are the variables cate- gorical or quantitative?
MATLAB: An Introduction with Applications
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Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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Related questions
Question
Explain please
![1
1
r
n
an
for
tis-
are
Exercises 8.30 to 8.36 analyze additional results of
this study, examining results after 4 weeks.
8.30 Checking Conditions for Body Mass Gain The
mice in the study had body mass measured through-
out the study. Computer output showing body mass
gain (in grams) after 4 weeks for each of the three
light conditions is shown, and a dotplot of the data
is given in Figure 8.6.
Level
DM
LD
LL
N
10
8
9
Mean
7.859
5.926
11.010
StDev
3.009
1.899
2.624
(a) In the sample, which group of mice gained the
most, on average, over the four weeks? Which
gained the least?
(b) Do the data appear to meet the requirement of
having standard deviations that are not dramat-
ically different?
(c) The sample sizes are small, so we check that the
data are relatively normally distributed. We see
in Figure 8.6 that we have no concerns about the
DM and LD samples. However, there is an out-
lier for the LL sample, at 17.4 grams. We proceed
as long as the z-score for this value is within +3.
Find the z-score. Is it appropriate to proceed
with ANOVA?
(d) What are the cases in this analysis? What are
the relevant variables? Are the variables cate-
gorical or quantitative?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F9ceadcea-1d0c-46b9-af7a-48f9b0bf3d90%2F3ae0f4fd-efc1-4bd3-bc7d-c9c7b93930e2%2Fbdnznoa_processed.jpeg&w=3840&q=75)
Transcribed Image Text:1
1
r
n
an
for
tis-
are
Exercises 8.30 to 8.36 analyze additional results of
this study, examining results after 4 weeks.
8.30 Checking Conditions for Body Mass Gain The
mice in the study had body mass measured through-
out the study. Computer output showing body mass
gain (in grams) after 4 weeks for each of the three
light conditions is shown, and a dotplot of the data
is given in Figure 8.6.
Level
DM
LD
LL
N
10
8
9
Mean
7.859
5.926
11.010
StDev
3.009
1.899
2.624
(a) In the sample, which group of mice gained the
most, on average, over the four weeks? Which
gained the least?
(b) Do the data appear to meet the requirement of
having standard deviations that are not dramat-
ically different?
(c) The sample sizes are small, so we check that the
data are relatively normally distributed. We see
in Figure 8.6 that we have no concerns about the
DM and LD samples. However, there is an out-
lier for the LL sample, at 17.4 grams. We proceed
as long as the z-score for this value is within +3.
Find the z-score. Is it appropriate to proceed
with ANOVA?
(d) What are the cases in this analysis? What are
the relevant variables? Are the variables cate-
gorical or quantitative?
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