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1 |
Perform the following tasks in SPSS. |
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a) |
use catalog.sav sample data file to
fit a multiple linear model to predict "Sales of Men's Clothing" on the
basis of variables "Number of Catalogs Mailed", "Number of Pages in
Catalog", "Number of Phone Lines Open for Ordering", "Amount Spent on
Print Advertising" and "Number of Customer Service Representatives".
Use forward selection, backward elimination and enter methods in this
respect. Interpret your result in each case.
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b) |
Use bankloan.sav sample data file to
fit a binary logistic regression model to predict default on the basis of
variables age, ed, income, debtinc, creddebt and othdebt. Interpret your
result.
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c) |
Find frequency distribution of
"Preferred breakfast" for those senior citizens who are also living an
active life (Use sample data set cereal.sav).
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2 |
Perform the following tasks in SPSS. |
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a) |
Carry out a test of independence of
attributes "Preferred breakfast" and "marital status". (Use cereal.sav)
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b) |
Carry out a test of independence of
attributes "Preferred breakfast" and "Age category". (Use cereal.sav)
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c) |
Use grocery_coupons.sav sample data
file to test that the mean of amount spent is equal to 105. Find 90%
confidence interval for the mean of amount spent.
Also test that the mean of amount spent by both male and female customers
is equal. What would to say about the equality of means for amount spent
on stores of different sizes.
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3. |
Question 3 is a group assignment
(Group size not more than 5 students). |
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a) |
Create a Questionnaire having 10-15
questions to collect data from 30 respondents. Topic may be of your
choice. Submit the soft copy of questionnaire through class representative
not later than 20th October 2019. |
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b) |
Enter your data in SPSS. Naming of
variables and data types should be appropriate. |
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c) |
Carry out data analysis of this data
set. |
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d) |
Submit report of the statistical
analysis of this data in MS Word. |
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4 |
Perform the following tasks in
Minitab. |
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a) |
In order to
ascertain the age distribution of operatives in a certain industry, random
samples of 1720 males and 1230 females are drawn. The sample means and
standard deviations were 33.93 years and 14.20 years for the males and
27.44 years and 10.79 years for the females. Calculate the 95 percent
confidence interval for
i)
The mean age of all the male operatives.
ii) The
differences between their mean ages. |
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b) |
A psychology
class performed an experiment to compare whether a recall score in which
instructions to form images of 25 words were given is better than an
initial recall score for which no images instruction were given. Twelve
students participated in the experiment with the following results:
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With Imagery |
20 |
24 |
20 |
18 |
22 |
19 |
20 |
19 |
17 |
21 |
17 |
20 |
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Without Imagery |
5 |
9 |
5 |
9 |
6 |
11 |
8 |
11 |
7 |
9 |
8 |
16 |
Does it
appear that the average recall score is higher when imaginary is used?
Also construct 95% confidence interval for the difference between the
mean of both the imageries and interpret the results. |
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c) |
Generate 4
samples of sizes 5, 6, 7 and 7 from normal populations with means 45, 40,
47 and 38 respectively. While the standard deviations of these
distributions are 4, 6, 7 and 8 respectively. Test the equality of means. |
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5 |
a) |
Explain the procedure for testing of
equality of several means in Minitab and SPSS. |
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b) |
Use Minitab/SPSS to test equality of
means for the following experiment of wheat yield for different varieties.
Varieties are shown by A, B, C, D and E.
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A (8) |
B (5.3) |
C (4.1) |
D (5) |
E (16) |
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D (6.8) |
A (4.9) |
B (4.1) |
C (3.2) |
E (18) |
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B (6.3) |
E (16) |
C (4.7) |
D (4.0) |
A (5.0) |
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C (5.7) |
D (3.3) |
E (25) |
A (4.0) |
B (4.2) |
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E (18) |
C (4.7) |
A (4.2) |
D (6.6) |
B (6.2) |
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6 |
a) |
Consider the experiment in which two
fair dice are tossed and the absolute difference of dots is recorded.
Simulate this experiment 600 times using minitab. Find the frequency
distribution of the absolute differences and find mean and variance of
this distribution. |
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b) |
Compare the statistical packages
SPSS and Minitab with respect to statistical data analysis in social
sciences and physical sciences. |
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7 |
a) |
Perform regression analysis to
predict trade on the basis of other two variables on sample dataset
Employ.MTW. Also use matrix approach to do the same task. Furthermore,
calculate predicted values. |
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b) |
Discuss the
normality tests available in Minitab? |
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8 |
Perform the following tasks in R. |
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a) |
A psychology
class performed an experiment to compare whether a recall score in which
instructions to form images of 25 words were given is better than an
initial recall score for which no images instruction were given. Twelve
students participated in the experiment with the following results:
|
With Imagery |
20 |
24 |
20 |
18 |
22 |
19 |
20 |
19 |
17 |
21 |
17 |
20 |
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Without Imagery |
5 |
9 |
5 |
9 |
6 |
11 |
8 |
11 |
7 |
9 |
8 |
16 |
Does it
appear that the average recall score is higher when imaginary is used?
Also construct 95% confidence interval for the difference between
the mean of both the imageries and interpret the results. |
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b) |
Consider the experiment in which two
fair dice are tossed and the absolute difference of dots is recorded.
Simulate this experiment 600 times. Find the frequency distribution of the
absolute differences and find mean and variance of this distribution. |
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