Recent questions tagged #datahandling

+1 vote

Ignoring missing values from your dataset is an easier and correct approach than updating the dataset with mean / median values

asked Feb 10, 2020 in Data Science by miceperry (775 points)

0 votes

Import Data into R: Read CSV, Excel, SPSS, Stata, SAS Files

asked Nov 13, 2019 in R Language by MBarbieri (1.0k points)

0 votes

asked Sep 3, 2019 in Data Handling by Robin (13.0k points)

+1 vote

Technique used for evaluating findability of topics in a website

asked Jun 13, 2019 in User Research Methods by parvinder.singh (155 points)

+1 vote

The systematic process of collecting and analyzing target customer data, the competition, and the target market environment to aid in making messaging, positioning and pricing decisions.

asked Jun 13, 2019 in User Research Methods by parvinder.singh (155 points)

0 votes

If x and y are two tbls, which of the following joins return all rows from x where there are not matching values in y, keeping just columns from x?

asked Jun 7, 2019 in Data Handling using R by tempuser (391 points)

0 votes

If x and y are two tbls, which of the following joins return all rows from x and y irrespective of matching values?

asked Jun 7, 2019 in Data Handling using R by tempuser (391 points)

0 votes

If x and y are two tbls, which of the following joins return all rows from y, and all columns from x and y?

asked Jun 7, 2019 in Data Handling using R by tempuser (391 points)

0 votes

If x and y are two tbls, which of the following joins return all rows from x where there are matching values in y, and all columns from x and y?

asked Jun 7, 2019 in Data Handling using R by tempuser (391 points)

0 votes

If x and y are two tbls, which of the following joins return all rows from x where there are matching values in y, keeping just columns from x?

asked Jun 7, 2019 in Data Handling using R by tempuser (391 points)

0 votes

In the iris dataset, how many flowers of species setosa havePetal.Length/Petal.Width ratio of less than 10

asked Jun 7, 2019 in Data Handling using R by tempuser (391 points)

0 votes

In the mtcars dataset, how many cars provide a mileage of less than 20 mpg?

asked Jun 7, 2019 in Data Handling using R by tempuser (391 points)

0 votes

What is the average mileage of a car in the mtcars dataset-

asked Jun 7, 2019 in Data Handling using R by tempuser (391 points)

0 votes

In the iris dataset, how many flowers havePetal.Length/Petal.Width ratio of less than 10

asked Jun 7, 2019 in Data Handling using R by tempuser (391 points)

0 votes

In the hflights dataset, how many flights were cancelled in the month of January 2011.

asked Jun 7, 2019 in Data Handling using R by tempuser (391 points)

+1 vote

Which of the following functions does not list the total number of observations in a dataset?

asked Jun 7, 2019 in Data Handling using R by tempuser (391 points)

+1 vote

Which of the following functions lists all columns in a dataset with few values from each column?

asked Jun 7, 2019 in Data Handling using R by tempuser (391 points)

0 votes

Which of the following functions can be used to find the number or rows and columns in a dataset?

asked Jun 7, 2019 in Data Handling using R by tempuser (391 points)

0 votes

tbl is an extension of:

asked Jun 7, 2019 in Data Handling using R by tempuser (391 points)

0 votes

The functions write.c() exports data into file

asked Jun 7, 2019 in Data Handling using R by tempuser (391 points)

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