BG 9

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School

University of British Columbia *

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Course

COMM 205

Subject

Mathematics

Date

Jan 9, 2024

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pdf

Pages

4

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Breakout Group (BG) 9 Due Nov 8 at 11p.m. Points 10 Questions 2 Available Nov 8 at 12p.m. - Nov 8 at 11:59p.m. 11 hours and 59 minutes Time Limit None Allowed Attempts Unlimited Instructions This quiz was locked Nov 8 at 11:59p.m.. Attempt History Attempt Time Score LATEST Attempt 1 11 minutes 10 out of 10 Score for this attempt: 10 out of 10 Submitted Nov 8 at 1:28p.m. This attempt took 11 minutes. Please submit your answers by the end of the class. Every student should submit their own answers. Please use this file (https://canvas.ubc.ca/courses/123136/files/28052692?wrap=1) (https://canvas.ubc.ca/courses/123136/files/28052692/download?download_frd=1) for this BG exercise. Please open up your RStudio first and then open the file in RStudio. If you click on the file directly, your system might not recognize the file association. 5 / 5 pts Question 1 A little bit of an overview for using Vectors in Arithmetic Operations: An arithmetic operation between a vector and an atomic value: Atomic value will be applied to each element of the vector An arithmetic operation between two vectors Operation is performed element-wise
In both cases, the result is a vector Suppose we have a vector of cities, a vector for countries that they are in and another vector for today's temperature (in Celsius) in those cities. A given position in these vectors corresponds to the same city. cities <- c("Vancouver", "Toronto", "New York", "Los Angeles", "Dallas", "Phoenix", "Tampa", "Winnipeg", "Saskatoon", "Edmonton") country <- c("Canadian","Canadian","American", "American","American","American", "American","Canadian","Canadian", "Canadian") today_temp_C <- c(10, 5, 2, 15, 25, 24, 20, -2, -5, -3) Suppose tomorrow will be 2 degrees Celsius warmer than today. Create a tomorrow_temp_F vector that would tell the temperature in Fahrenheit in those cities tomorrow? tomorrow_temp_F <- 1.8 * today_temp_C + 32 + 2 tomorrow_temp_F <- 1.8 * (today_temp_C + 2) + 32 Correct! Correct! tomorrow_temp_F <- 1.8(today_temp_C + 2) + 32 (tomorrow_temp_F - 32)/1.8 - 2 <- today_temp_C 5 / 5 pts Question 2 A little bit of an overview for the implicit coercion in Arithmetic Operations with Vectors: If the vector's data type does not fit in the arithmetic operation, R will
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