Which section of the course did better on the GRE Math exam after the course – the one with homework or the one without? What type of t-test should you use to answer this question? Provide the following statistics from your output: t-value = Degrees of Freedom = p-value = Mean Difference = 95% Confidence Interval = ( , ) Cohen’s d = Write up your results in APA Format. How do your students’ scores after the course compare to scores for students in the general population? What type of t-test should you use to answer this question? Provide the following statistics from your output: t-value = Degrees of Freedom = p-value = Mean Difference = 95% Confidence Interval = ( , ) Cohen’s d = Write up your results in APA Format. Data: Age Sex (M=1, F=2) GRE Math Pre Homework (Y=1, N=0) GRE Math Post Satisfaction 17 1 134 1 154 8 20 2 145 1 145 6 19 2 149 1 152 7 22 2 144 1 150 5 22 1 154 1 163 2 23 1 153 1 154 10 25 2 160 1 161 10 18 2 152 1 147 7 21 2 152 1 167 8 20 1 130 1 166 8 37 1 140 1 160 10 18 1 136 1 166 10 45 1 150 1 170 7 26 1 155 1 170 10 39 2 160 1 169 9 58 2 136 0 158 10 21 2 130 0 152 8 20 2 148 0 168 10 17 1 147 0 154 8 36 2 156 0 155 3 20 1 130 0 150 5 22 1 139 0 150 8 27 1 138 0 148 9 21 2 140 0 149 6 23 2 167 0 166 8 24 2 158 0 142 10 40 1 143 0 155 5 21 2 155 0 160 10 20 1 139 0 145 4 19 2 142 0 152 9

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Related questions

Question

Which section of the course did better on the GRE Math exam after the course – the one with homework or the one without?
1. What type of t-test should you use to answer this question?
2. Provide the following statistics from your output:
  1. t-value =
  2. Degrees of Freedom =
  3. p-value =
  4. Mean Difference =
  5. 95% Confidence Interval = ( , )
  6. Cohen’s d =
3. Write up your results in APA Format.
How do your students’ scores after the course compare to scores for students in the general population?
1. What type of t-test should you use to answer this question?
2. Provide the following statistics from your output:
  1. t-value =
  2. Degrees of Freedom =
  3. p-value =
  4. Mean Difference =
  5. 95% Confidence Interval = ( , )
  6. Cohen’s d =
3. Write up your results in APA Format.

Data:

Age	Sex (M=1, F=2)	GRE Math Pre	Homework (Y=1, N=0)	GRE Math Post	Satisfaction
17	1	134	1	154	8
20	2	145	1	145	6
19	2	149	1	152	7
22	2	144	1	150	5
22	1	154	1	163	2
23	1	153	1	154	10
25	2	160	1	161	10
18	2	152	1	147	7
21	2	152	1	167	8
20	1	130	1	166	8
37	1	140	1	160	10
18	1	136	1	166	10
45	1	150	1	170	7
26	1	155	1	170	10
39	2	160	1	169	9
58	2	136	0	158	10
21	2	130	0	152	8
20	2	148	0	168	10
17	1	147	0	154	8
36	2	156	0	155	3
20	1	130	0	150	5
22	1	139	0	150	8
27	1	138	0	148	9
21	2	140	0	149	6
23	2	167	0	166	8
24	2	158	0	142	10
40	1	143	0	155	5
21	2	155	0	160	10
20	1	139	0	145	4
19	2	142	0	152	9

Definition Definition Measure of central tendency that is the average of a given data set. The mean value is evaluated as the quotient of the sum of all observations by the sample size. The mean, in contrast to a median, is affected by extreme values. Very large or very small values can distract the mean from the center of the data. Arithmetic mean: The most common type of mean is the arithmetic mean. It is evaluated using the formula: μ = 1 N ∑ i = 1 N x i Other types of means are the geometric mean, logarithmic mean, and harmonic mean. Geometric mean: The nth root of the product of n observations from a data set is defined as the geometric mean of the set: G = x 1 x 2 ... x n n Logarithmic mean: The difference of the natural logarithms of the two numbers, divided by the difference between the numbers is the logarithmic mean of the two numbers. The logarithmic mean is used particularly in heat transfer and mass transfer. ln x 2 − ln x 1 x 2 − x 1 Harmonic mean: The inverse of the arithmetic mean of the inverses of all the numbers in a data set is the harmonic mean of the data. 1 1 x 1 + 1 x 2 + ...

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