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Question 1 Which of the following answer choices is correct? • (A) The estimated model shown in the regression above does not have an intercept because none of the rl values are zero. • (B) There is a negative relationship between zl and yl. • (C) The line of best fit matches the data well, so 3 should be approximately equal to 3. • (D) We cannot extrapolate a predicted value for yl when a hypothetical z1 value is given to be 30. If you believe the answer is choice B, the code cell below needs to look like answer_1- "B"

Question 1 Which of the following answer choices is correct? • (A) The estimated model shown in the regression above does not have an intercept because none of the rl values are zero. • (B) There is a negative relationship between zl and yl. • (C) The line of best fit matches the data well, so 3 should be approximately equal to 3. • (D) We cannot extrapolate a predicted value for yl when a hypothetical z1 value is given to be 30. If you believe the answer is choice B, the code cell below needs to look like answer_1- "B"

Database System Concepts
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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x1 x2 y1 y2 O 1.764052 10.555963 10.231131 37.431940 36.457446 1 0.400157 10.892474 8.688187 37.077579 30.464718 2 0.978738 9.577685 11.024873 33.711794 38.053357 3 2.240893 10.104714 11.282519 36.555035 40.088449 4 1.867558 10.228053 11.786746 36.551718 41.227797 nly, ID: 83a271 We now plot some regression data, to be used in the following question. sns.Implot (x='x1', y='yl', data-df) * please refer to the text below if you have difficulty viewing the plot output alt_text_for_plot -' A scatter plot with a line of best fit between variables yi (on the y-axis) and xl (on the x-axis). The left hand side of the graph shows the line starting at approximately (7, 25). The right hand side of the graph shows the line ending at approximately (13, 42.5). 42.5 235 25.0 12 10 11 13
Transcribed Image Text:x1 x2 y1 y2 O 1.764052 10.555963 10.231131 37.431940 36.457446 1 0.400157 10.892474 8.688187 37.077579 30.464718 2 0.978738 9.577685 11.024873 33.711794 38.053357 3 2.240893 10.104714 11.282519 36.555035 40.088449 4 1.867558 10.228053 11.786746 36.551718 41.227797 nly, ID: 83a271 We now plot some regression data, to be used in the following question. sns.Implot (x='x1', y='yl', data-df) * please refer to the text below if you have difficulty viewing the plot output alt_text_for_plot -' A scatter plot with a line of best fit between variables yi (on the y-axis) and xl (on the x-axis). The left hand side of the graph shows the line starting at approximately (7, 25). The right hand side of the graph shows the line ending at approximately (13, 42.5). 42.5 235 25.0 12 10 11 13
Question 1 Which of the following answer choices is correct? • (A) The estimated model shown in the regression above does not have an intercept because none of the rl values are zero. • (B) There is a negative relationship between zl and yl. • (C) The line of best fit matches the data well, so 3 should be approximately equal to 3. • (D) We cannot extrapolate a predicted value for yl when a hypothetical z1 value is given to be 30. If you believe the answer is choice B, the code cell below needs to look like answer 1 = "B"
Transcribed Image Text:Question 1 Which of the following answer choices is correct? • (A) The estimated model shown in the regression above does not have an intercept because none of the rl values are zero. • (B) There is a negative relationship between zl and yl. • (C) The line of best fit matches the data well, so 3 should be approximately equal to 3. • (D) We cannot extrapolate a predicted value for yl when a hypothetical z1 value is given to be 30. If you believe the answer is choice B, the code cell below needs to look like answer 1 = "B"
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