Which of the following Python scripts calculates the mean of two variables, "Exam1" and "Exam2", from a CSV file called "ExamScores" that contains four variables: Exam1, Exam2, Exam3, and Exam4? a) import pandas as pd
scores = pd. read_csv('ExamScores. csv')
print(scores[['Exam1', 'Exam2']].mean())
b) import pandas as pd
scores = pd. read_csv('ExamScores. csv')
print(scores[['Exam1', 'Exam2']].median())
c) import pandas as pd
scores = pd. read_csv('ExamScores. csv')
print(mean[['Exam1', 'Exam2']])
d) import pandas as pd
scores = pd. read_csv('ExamScores. csv')
print(scores('Exam1', 'Exam2').mean())

What are listed in the vertical columns across the top of the event editor? a. file names b. conditions c. check marks d. action types

Design a class tictactoe that: holds the following information about the game: two-dimensional array (3 by 3), and winner. add additional variables as needed. includes the functions to perform the various operations on objects. for example, function to print the board, getting the move, checking if move is valid, determining if there is a winner after each move. add additional operations as needed. includes constructor(s). write the functions of the class, and write a program that uses the class. the program should declare an object of type tictactoe. the program will create the board and store it in the array. the program will allow two players to play the tic-tac-toe game. after every valid move update the array, check if there is a winner. if there is no winner and no tie, then print the board again to continue.

How should you specify box sizes on a web page if you want the boxes to vary according to the font size of the text they contain? a. in pixels b. in inches c. as percentages d. in em units