AP CSP Unit 2 Data 2/2/2024

Which system uses both letters and numbers to represent values and has place values that change to multiples of 16?

• Binary system

• Decimal system

• Octal system

• Hexadecimal system

Which type of data compression sacrifices some data to achieve greater compression?

• Huffman coding

• Lossless compression

• Lossy Compression

• Run-length encoding

Which of the following statements about data compression is true?

• MAny modern compression software systems use a combination of lossless and lossy compression methods.

• Lossy compression methods ensure the integrity of the original data.

• Data compression always requires converting data to a different format.

• Lossless compression methods sacrifice some data to achieve greater compression.

What is the relationship between correlation and causation?

• Correlation always implies causation.

• Correlation does not necessarily indicate causation.

• Causation cannot exist without correlation.

• Correlation is a subset of causation.

Convert the binary value 01001111 to a decimal value.

• 79

• None of the above

• 158

• 257