This example explains how to group and summarize our data frame according to two variables using the functions of the dplyr package.In order to use the functions of the dplyr package, we first have to install and load dplyr:install.packages("dplyr") # Install & load dplyr package library("...
Two-way tables Example 2 tabulate, summarize can be used to obtain two-way as well as one-way breakdowns. For in- stance, we obtained summary statistics on mpg decomposed by foreign by typing tabulate foreign, summarize(mpg). We can specify up to two variables before the comma: . ...
百度试题 结果1 题目A tabular method that can be used to summarize the data on two variables simultaneously is called( ). A. simultaneous equations B. crosstabulation C. a histogram D. an ogive 相关知识点: 试题来源: 解析 B 反馈 收藏 ...
Declare variables for the consumer price index (CPI) and unemployment rate (UNRATE) series. Remove any missing values from the beginning of the series. Get load Data_USEconModel cpi = DataTimeTable.CPIAUCSL; unrate = DataTimeTable.UNRATE; idx = all(~isnan([cpi unrate]),2); cpi = ...
Create, transform, and summarize custom random variables with distribution functions (analogues of p*(), d*(), q*(), and r*() functions from base R), all of which called “pdqr-functions”. General idea is to work with manually created distributions which can be described in four ...
In my analysis script I group a df by two variables and then summarise over them. My df is really big (~1,500,000 rows), but this was never a problem and things ran quickly. I recently reinstalled R and all the packages with it, and now the same script takes ages to run (long ...
I have a dataset named ‘Vehicle Parts’ from which I want to first filter the variable [ACCOUNT NAME] by ‘vehicle parts -warehouse’ and then I want to group by the variables – [TRANS_DATE] is in date format, [ORG] – numeric variable, [ORG_NAME] – is a string. Then, I want...
In a pattern, 1 indicates that all values of the variable are nonmissing and 0 indicates that all values are missing. Thus pattern (1,1,1) means no missing values, and 93% of our data have that pattern. There are two patterns in which variables are missing, (1,1,0) and (0,0,0...
Question: The Grand Valley Company, run by the J. Motwani family, produces two products: bed mattresses and box springs. A prior contract requires that the firm produce at least 30 mattresses or box springs, in any combination, per week. In addition, union labor agreements demand the stitchin...
Please list the independent variables (up to 5) and explain why they are included. In addition, define Identify one example of cash flow for each type of activity (operating, investing, and financing) of a restaurant business. Briefly justify the choices and state whether they are inflows o...