The accompanying frequency distribution of fracture strength (MPa) observations for ceramic bars fired in a particular kiln appeared in an article. Class 81-<83 83-<85 85-<87 87-<89 89-<91 91-93 93-<95 95-97 97-<99 Frequency 6 7 18 30 43 26 22 20 14 3 USE SALT (a) Construct a histogram/bar chart based on relative frequencies. Relative Frequency 0.3 0.25 0.2 0.15 0.1 0.05 0. 81 83 85 87 89 91 93 95 97 99 Fracture strength (MPa) O Comment on any interesting features. Relative Frequency 0.3 0.25 0.2 0.15 0.1 0.05 Relative Frequency 0.3 0.25 0.2 0.15 0.1 0.3 0.05 Relative Frequency 0.25 0.2 0.15 0.1 0.05 0. 0. 0. 81 83 85 87 89 91 93 95 97 99 Fracture strength (MPa) 81 83 85 87 89 91 93 95 97 99 Fracture strength (MPa) A representative value for this data would be around 95 MPa. The histogram shows strong positive skewness and is unimodal. A representative value for this data would be around 90 MPa. The histogram is reasonably symmetric and unimodal. A representative value for this data would be around 95 MPa. The histogram shows strong negative skewness and is unimodal. ○ A representative value for this data would be around 95 MPa. The histogram is reasonably symmetric and unimodal. ○ A representative value for this data would be around 83 MPa. The histogram shows strong positive skewness and is unimodal. (b) What proportion of the strength observations are at least 85? Less than 95? (Round your answers to four decimal places.) at least 85 less than 95 (c) Roughly what proportion of the observations are less than 90? (Round your answer to four decimal places.) 81 83 85 87 89 91 93 95 97 99 Fracture strength (MPa)
The accompanying frequency distribution of fracture strength (MPa) observations for ceramic bars fired in a particular kiln appeared in an article. Class 81-<83 83-<85 85-<87 87-<89 89-<91 91-93 93-<95 95-97 97-<99 Frequency 6 7 18 30 43 26 22 20 14 3 USE SALT (a) Construct a histogram/bar chart based on relative frequencies. Relative Frequency 0.3 0.25 0.2 0.15 0.1 0.05 0. 81 83 85 87 89 91 93 95 97 99 Fracture strength (MPa) O Comment on any interesting features. Relative Frequency 0.3 0.25 0.2 0.15 0.1 0.05 Relative Frequency 0.3 0.25 0.2 0.15 0.1 0.3 0.05 Relative Frequency 0.25 0.2 0.15 0.1 0.05 0. 0. 0. 81 83 85 87 89 91 93 95 97 99 Fracture strength (MPa) 81 83 85 87 89 91 93 95 97 99 Fracture strength (MPa) A representative value for this data would be around 95 MPa. The histogram shows strong positive skewness and is unimodal. A representative value for this data would be around 90 MPa. The histogram is reasonably symmetric and unimodal. A representative value for this data would be around 95 MPa. The histogram shows strong negative skewness and is unimodal. ○ A representative value for this data would be around 95 MPa. The histogram is reasonably symmetric and unimodal. ○ A representative value for this data would be around 83 MPa. The histogram shows strong positive skewness and is unimodal. (b) What proportion of the strength observations are at least 85? Less than 95? (Round your answers to four decimal places.) at least 85 less than 95 (c) Roughly what proportion of the observations are less than 90? (Round your answer to four decimal places.) 81 83 85 87 89 91 93 95 97 99 Fracture strength (MPa)
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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Problem 1P
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Transcribed Image Text:The accompanying frequency distribution of fracture strength (MPa) observations for ceramic bars fired in a particular kiln appeared in an article.
Class
81-<83 83-<85 85-<87
87-<89 89-<91 91-93 93-<95
95-97
97-<99
Frequency
6
7
18
30
43
26
22
20
14
3
USE SALT
(a) Construct a histogram/bar chart based on relative frequencies.
Relative Frequency
0.3
0.25
0.2
0.15
0.1
0.05
0.
81 83 85 87 89 91 93 95 97 99
Fracture strength (MPa)
O
Comment on any interesting features.
Relative Frequency
0.3
0.25
0.2
0.15
0.1
0.05
Relative Frequency
0.3
0.25
0.2
0.15
0.1
0.3
0.05
Relative Frequency
0.25
0.2
0.15
0.1
0.05
0.
0.
0.
81 83
85 87 89 91 93 95 97 99
Fracture strength (MPa)
81 83 85 87 89 91 93 95 97 99
Fracture strength (MPa)
A representative value for this data would be around 95 MPa. The histogram shows strong positive skewness and is unimodal.
A representative value for this data would be around 90 MPa. The histogram is reasonably symmetric and unimodal.
A representative value for this data would be around 95 MPa. The histogram shows strong negative skewness and is unimodal.
○ A representative value for this data would be around 95 MPa. The histogram is reasonably symmetric and unimodal.
○ A representative value for this data would be around 83 MPa. The histogram shows strong positive skewness and is unimodal.
(b) What proportion of the strength observations are at least 85? Less than 95? (Round your answers to four decimal places.)
at least 85
less than 95
(c) Roughly what proportion of the observations are less than 90? (Round your answer to four decimal places.)
81 83 85 87 89 91 93 95 97 99
Fracture strength (MPa)
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