Representative data on x = carbonation depth (in millimeters) and y = strength (in mega pascals) for a sample of concrete core specimens taken from a particular building. 20 20 Strength, y 22.8 17.1 21.1 16.1 50 55 12.4 11.4 9.7 Depth, x 30 35 40 65 13.4 6.8 o Construct a scatterplot. Does the relationship between carbonation depth and strength appear to be linear? o Find the equation of the least-square line. o What would you predict for strength when carbonation depth is 25 mm? o Explain why it would not be reasonable to use the least-square line to predict strength when carbonation depth is 100 mm.

Representative data on x = carbonation depth (in millimeters) and y = strength (in mega pascals) for a sample of concrete core specimens taken from a particular building. 20 20 Strength, y 22.8 17.1 21.1 16.1 50 55 12.4 11.4 9.7 Depth, x 30 35 40 65 13.4 6.8 o Construct a scatterplot. Does the relationship between carbonation depth and strength appear to be linear? o Find the equation of the least-square line. o What would you predict for strength when carbonation depth is 25 mm? o Explain why it would not be reasonable to use the least-square line to predict strength when carbonation depth is 100 mm.

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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for x= 0,1,2,4,5,6
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