The results of 15 compressive strength tests for a 20 Mpa requirement are detailed in the table below. Find the standard deviation and determine the overdesign required. (keep your answers and calculations to 1 decimal place; that is round to one decimal place)
The results of 15 compressive strength tests for a 20 Mpa requirement are detailed in the table below. Find the standard deviation and determine the overdesign required. (keep your answers and calculations to 1 decimal place; that is round to one decimal place)
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
Related questions
Question
-
The results of 15 compressive strength tests for a 20 Mpa requirement are detailed in the table below. Find the standard deviation and determine the overdesign required. (keep your answers and calculations to 1 decimal place; that is round to one decimal place)
Test Strength (MPa)
(x - x avg.)2
22.1
21.3
20.6
16.8
17.2
20.1
24.1
23.6
18.3
17.8
20.4
16.4
19.8
23.9
20.5
Average strength = ______ Mpa
Standard Deviation =
Overdesign = 20 Mpa + _____Mpa
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 3 steps
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, civil-engineering and related others by exploring similar questions and additional content below.Recommended textbooks for you
Structural Analysis (10th Edition)
Civil Engineering
ISBN:
9780134610672
Author:
Russell C. Hibbeler
Publisher:
PEARSON
Principles of Foundation Engineering (MindTap Cou…
Civil Engineering
ISBN:
9781337705028
Author:
Braja M. Das, Nagaratnam Sivakugan
Publisher:
Cengage Learning
Structural Analysis (10th Edition)
Civil Engineering
ISBN:
9780134610672
Author:
Russell C. Hibbeler
Publisher:
PEARSON
Principles of Foundation Engineering (MindTap Cou…
Civil Engineering
ISBN:
9781337705028
Author:
Braja M. Das, Nagaratnam Sivakugan
Publisher:
Cengage Learning
Fundamentals of Structural Analysis
Civil Engineering
ISBN:
9780073398006
Author:
Kenneth M. Leet Emeritus, Chia-Ming Uang, Joel Lanning
Publisher:
McGraw-Hill Education
Traffic and Highway Engineering
Civil Engineering
ISBN:
9781305156241
Author:
Garber, Nicholas J.
Publisher:
Cengage Learning