Answered: Assignment Many students at popular…

PREALGEBRA

15th Edition

ISBN:9781938168994

Author:OpenStax

Publisher:OpenStax

Chapter5: Decimals

Section5.5: Averages And Probability

Problem 401E: Explain in your own words the difference between the mean, median, and mode of a set of numbers.

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Assignment

Many students at popular school in Timbuktu have been complaining that there seems to be some level of inconsistency with the marking of essays among teachers. To verify if there is any truth to this, a group of students submitted the same essay to different teachers. The grade awarded by each teacher for each essay was recorded. Use the data below to answer the questions that follow.

Essay	Quarrie	Taylor	Wilson	Forbes
1	62	63	65	68
2	58	60	61	64
3	63	68	72	58
4	64	65	65	61
5	60	63	66	67
6	62	66	65	59
7	57	67	71	60
8	58	68	65	67
9	59	69	64	62
10	63	60	67	66
11	65	64	62	63
12	61	61	73	64
13	60	62	65	68
14	59	68	68	70
15	57	66	69	71
16	56	63	60	68
17	62	60	61	69

Question 1

Clas

Essay	Quarrie	Taylor	Wilson	Forbes
1	62	63	65	68
2	58	60	61	64
3	63	68	72	58
4	64	65	65	61
5	60	63	66	67
6	62	66	65	59
7	57	67	71	60
8	58	68	65	67
9	59	69	64	62
10	63	60	67	66
11	65	64	62	63
12	61	61	73	64
13	60	62	65	68
14	59	68	68	70
15	57	66	69	71
16	56	63	60	68
17	62	60	61	69

Question 1

Classify the variables and the measurement scale used.

Question 2

Discuss the sampling method that you think was used for this research.

Question 3

List two limitations of the method selected. Discuss two (2) possible types of errors that may arise in this research.

Question 4

Calculate one (1) appropriate measure of central tendency using the data for each teacher and explain your choice. *There are a total of four teachers, so there should be a total of four measure of central tendencies.

Question 5

Use the data to generate any three (3) appropriate graphs. *Your answer should include a total of three graphs.

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