Number Woman=0 Man= 1 Exam 1 Exam 2 Exam 3 Homework Lab Number grade Letter grade Z-score Absolute z-score 1 0 61 94 76 94 87 82.4 B 0.18 0.18 2 0 99 97 90 100 89 95 A 1.38 1.38 3 0 64 76 69 88 87 76.8 C -0.36 0.36 4 0 77 82 86 98 94 87.4 B 0.66 0.66 5 0 70 89 81 93 97 86 B 0.52 0.52 6 0 67 62 65 60 90 68.8 D -1.13 1.13 7 0 87 83 81 85 68 80.8 B 0.02 0.02 8 0 74 88 65 49 90 73.2 C -0.71 0.71 9 0 91 97 87 81 94 90 A 0.90 0.90 10 0 94 87 77 90 67 83 B 0.23 0.23 11 0 47 72 54 59 63 59 F -2.07 2.07 12 0 81 64 78 84 73 76 C -0.44 0.44 13 0 87 90 81 93 80 86.2 B 0.54 0.54 14 0 96 100 84 97 84 92.2 A 1.12 1.12 15 0 80 76 90 85 85 83.2 B 0.25 0.25 16 0 64 51 69 74 78 67.2 D -1.28 1.28 17 0 70 86 84 77 75 78.4 C -0.21 0.21 18 0 80 93 98 95 98 92.8 A 1.17 1.17 19 0 88 83 83 90 84 85.6 B 0.48 0.48 20 0 52 46 62 70 59 57.8 F -2.19 2.19 21 0 97 83 83 85 98 89.2 B 0.83 0.83 22 1 80 74 90 83 65 78.4 C -0.21 0.21 23 1 86 81 72 85 97 84.2 B 0.35 0.35 24 1 88 99 91 94 98 94 A 1.29 1.29 25 1 70 70 71 80 83 74.8 C -0.55 0.55 26 1 81 93 88 83 95 88 B 0.71 0.71 27 1 83 70 75 81 76 77 C -0.34 0.34 28 1 49 55 60 60 71 59 F -2.07 2.07 29 1 77 82 78 67 82 77.2 C -0.32 0.32 30 1 95 87 100 91 95 93.6 A 1.25 1.25 Descriptive Statistics by Group Give the mean, median, mode, and standard deviation for the Number Grades variable for men and for women separately. On average, did men or women do better in the course? Do you think this difference is significant? Transforming Numerical Data to Categorical Data How many A's did students receive in your class? What percentage of the class received B's? Paste the frequency table you used to answer the above question below.

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

Number	Woman=0 Man= 1	Exam 1	Exam 2	Exam 3	Homework	Lab	Number grade	Letter grade	Z-score	Absolute z-score
1	0	61	94	76	94	87	82.4	B	0.18	0.18
2	0	99	97	90	100	89	95	A	1.38	1.38
3	0	64	76	69	88	87	76.8	C	-0.36	0.36
4	0	77	82	86	98	94	87.4	B	0.66	0.66
5	0	70	89	81	93	97	86	B	0.52	0.52
6	0	67	62	65	60	90	68.8	D	-1.13	1.13
7	0	87	83	81	85	68	80.8	B	0.02	0.02
8	0	74	88	65	49	90	73.2	C	-0.71	0.71
9	0	91	97	87	81	94	90	A	0.90	0.90
10	0	94	87	77	90	67	83	B	0.23	0.23
11	0	47	72	54	59	63	59	F	-2.07	2.07
12	0	81	64	78	84	73	76	C	-0.44	0.44
13	0	87	90	81	93	80	86.2	B	0.54	0.54
14	0	96	100	84	97	84	92.2	A	1.12	1.12
15	0	80	76	90	85	85	83.2	B	0.25	0.25
16	0	64	51	69	74	78	67.2	D	-1.28	1.28
17	0	70	86	84	77	75	78.4	C	-0.21	0.21
18	0	80	93	98	95	98	92.8	A	1.17	1.17
19	0	88	83	83	90	84	85.6	B	0.48	0.48
20	0	52	46	62	70	59	57.8	F	-2.19	2.19
21	0	97	83	83	85	98	89.2	B	0.83	0.83
22	1	80	74	90	83	65	78.4	C	-0.21	0.21
23	1	86	81	72	85	97	84.2	B	0.35	0.35
24	1	88	99	91	94	98	94	A	1.29	1.29
25	1	70	70	71	80	83	74.8	C	-0.55	0.55
26	1	81	93	88	83	95	88	B	0.71	0.71
27	1	83	70	75	81	76	77	C	-0.34	0.34
28	1	49	55	60	60	71	59	F	-2.07	2.07
29	1	77	82	78	67	82	77.2	C	-0.32	0.32
30	1	95	87	100	91	95	93.6	A	1.25	1.25

Descriptive Statistics by Group
- Give the mean, median, mode, and standard deviation for the Number Grades variable for men and for women separately.
- On average, did men or women do better in the course? Do you think this difference is significant?

Transforming Numerical Data to Categorical Data
- How many A's did students receive in your class? What percentage of the class received B's?
- Paste the frequency table you used to answer the above question below.

Definition Definition Measure of central tendency that is the value that occurs most frequently in a data set. A data set may have more than one mode if multiple categories repeat an equal number of times. For example, in a data set with five item—3, 5, 5, 29, 473—the mode is 5 because it occurs twice and no other value occurs more than once. On a histogram or bar chart, the element with the highest bar represents the mode. Therefore, the mode is sometimes considered the most popular option. The mode is useful for nominal or categorical data (e.g., the most common color car that users purchase), but it is problematic for continuous data because it is more likely not to have any value that is more frequent than the other.

Expert Solution

Step 1: Introduction

A data can be raw or grouped, with some pro and cons associated with both of them. The raw data has each and every values and each value has some effect while in grouped data no matter what one does some information is always lost as we don’t have the exact value but the intervals.

It is one of the reason we can get different mean, median, mode or standard deviation with the same raw data which has been grouped in classes. If the data are in very huge amount then it is very difficult to analysis it in raw form but if it can be synthesis in grouped from then we can understand the behavior of data.