Understanding Compression, Data Processing, and Evaluation

This video is an AP Computer Science Principles review led by Mrs. Julie Alano. It covers 11 questions, focusing on topics like binary storage, data compression, and processing city names. The video also discusses binary search, quiz scores, and student data compilation, providing strategies for solving each problem.

What is the purpose of the AP exam reference sheet?

• To provide a list of all possible exam questions

• To describe the code used in the AP exam questions

• To give answers to the exam questions

• To provide a study guide for the exam

Which additional piece of information is most useful in determining the artist with the greatest attendance during a particular month?

• Start time of the show

• Length of the show in minutes

• Average ticket price

• Total dollar amount of food and drinks sold

How many bits are needed to store eight directions in memory?

• Two bits

• Three bits

• Four bits

• Five bits

What is the correct order of the following values from least to greatest: 5, 11, 12, 13?

• 5, 13, 11, 12

• 5, 11, 12, 13

• 5, 11, 13, 12

• 5, 12, 11, 13

Which type of compression should be used to reduce file size while allowing complete restoration to the original version?

• Both lossy and lossless compression

• Lossless compression

• Lossy compression

• No compression

What are the challenges associated with processing city names entered by users?

• Users might enter the city name in all caps

• Users might enter the city name in a different language

• Users might enter the city name too quickly

• Users might enter abbreviations

What can be determined using only the image data captured by a car's dashboard camera?

• Number of bicycles passed by the car

• Average number of hours driven

• Average speed of the car

• Distance traveled by the car

Which expression will evaluate to true if a show is a talk show and is on Saturday or Sunday?

• genre == 'Talk' AND day == 'Saturday' AND day == 'Sunday'

• genre == 'Talk' OR (day == 'Saturday' AND day == 'Sunday')

• genre == 'Talk' AND (day == 'Saturday' OR day == 'Sunday')

• genre == 'Talk' OR day == 'Saturday' OR day == 'Sunday'

Which code segment correctly appends 10 consecutive even integers starting from 2 to an empty list?

• even_list.append(2 * i)

• even_list.append(2 + i)

• even_list.append(i + 2)

• even_list.append(i)

What is the main problem caused by the lack of unique ID numbers in the student databases?

• Students might be in the same grade level

• Students might have the same number of absences

• Students might have the same grade point average

• Students might have the same name