Home » Data Science » Data Analysis » Examples of variable names that can be used in R are autos_5 and utility2. Variable names should start with a letter and can also contain numbers and underscores. Q: Practice More Questions From: Programming and data analytics Created with Fabric.js 4.6.0 Practice More Questions Data Analysis 2000+ Qs Machine Learning 1000+ Qs Created with Fabric.js 4.6.0 Similar Questions A data analyst is working with the penguins dataset. What code chunk does the analyst write to make sure all the column names are unique and consistent and contain only letters, numbers, and…Given the following word vectors and start and end vectors, determine the start and end of the sequence of interest.In Python, variable names must start with which of the following? Select all that apply.An analyst comes across dates listed as strings in a dataset, for example December 10th, 2020. To convert the strings to a date/time data type, which function should the analyst use?In Python, which data type represents numbers that contain decimals?A data analyst wants to assign the value 50 to the variable daily_dosage. Which of the following types of operators will they need to write that code?If you use the mdy() function in R to convert the string “April 10, 2019”, what will return when you run your code?True or False: the start and end vectors are fixed throughout training A data analyst is working with a data frame named cars. The analyst notices that all the column names in the data frame are capitalized. What code chunk lets the analyst change all the column…A data analyst wants a quick summary of the structure of their data frame, including the column names and the number of rows and variables. What function should they use?A data analyst is working with a large data frame. It contains so many columns that they don’t all fit on the screen at once. The analyst wants a quick list of all of the column names to get a…A data analyst wants to save stakeholders time and effort when working with a Tableau dashboard. They also want to direct stakeholders to the most important data. What process can they use to…When we’re using a normal approximation, the width of our confidence interval depends on the variance of the normal distribution. Recall that the variance of each sample is identical, but the…You want to apply the filter() function to the variables Cocoa.Percent and Rating. Add the code chunk that lets you filter the data frame for chocolate bars that contain at least 75% cocoa and…A data professional wants to strengthen their communication skills. They study methods for simplifying highly technical information and telling compelling data stories. They also practice… Created with Fabric.js 4.6.0 Practice More Questions Data Analysis 200+ Qs Machine Learning 100+ Qs
