how to create a new data frame df_cyl by subsetting the data frame based on a user defined value for the column cyl

Read the ckd dataset (ckd.xlsx) and save it as df_ckd Read the AAPL dataset (AAPL.csv) and save it as df_aapl Read the telco_churn dataset (telco_churn.csv) and save it as df_churn Datasets are saved in the content folder of the blackboard under Assignment Datasets. import pandas as pd df_ckd = # fill in here # df_appl = # fill in here # df_churn = # fill in here #

Use AverageIFS to calculate the average dollar amount of the paid in full transactions over 4,000ドル in J5.

Which of the following assigns the number 0 to each element in a two-row, four-column Integer array named intSums? a. For intRow As Integer = 0 To 1 For intCol As Integer = 0 To 3 intSums(intRow, intCol) = 0 Next intCol Next intRow b. Dim intRow As Integer Dim intCol As Integer Do While intRow < 2 intCol = 0 Do While intCol < 4 intSums(intRow, intCol) = 0 intCol += 1 Loop intRow += 1 Loop c. For intX As Integer = 1 To 2 For intY As Integer = 1 To 4 intSums(intX - 1, intY - 1) = 0 Next intY Next intX d. All of the above.

What is another way to set the core_data data frame besides using the functions read.csv() and file.choose()?