For Questions 11 to 15, start withan R command which creates DataFrameC, a dataframe filled with data from one of R's standard datasets. This dataset provides information about Air Quality in New York from 1 May to 30 September. install.packages("datasets") library(datasets) DataFrameC <- airquality > head (DataFrameC) Ozone Solar.R Wind Temp Month Day 1 41 190 7.4 67 51 2 36 118 8.0 72 3 12 149 12.6 74 4 18 313 11.5 62 5 NA NA 14.3 56 55 6 28 NA 14.9 66 56 [Handy tip- if you use Courier font, your tables will be easier to read. In R, you can change the font from the Drop Down menu, choosing EDIT/GUI preferences] Q11. What is the average temperature for the month of September only (that is, when the Month= 9)? Round to the nearest integer. 52 Answer: 53 5 4

For Questions 11 to 15, start withan R command which creates DataFrameC, a dataframe filled with data from one of R's standard datasets. This dataset provides information about Air Quality in New York from 1 May to 30 September. install.packages("datasets") library(datasets) DataFrameC <- airquality > head (DataFrameC) Ozone Solar.R Wind Temp Month Day 1 41 190 7.4 67 51 2 36 118 8.0 72 3 12 149 12.6 74 4 18 313 11.5 62 5 NA NA 14.3 56 55 6 28 NA 14.9 66 56 [Handy tip- if you use Courier font, your tables will be easier to read. In R, you can change the font from the Drop Down menu, choosing EDIT/GUI preferences] Q11. What is the average temperature for the month of September only (that is, when the Month= 9)? Round to the nearest integer. 52 Answer: 53 5 4

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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