placeholder image to represent content

Homework 7 data representation

Quiz by sharon Hockley

Our brand new solo games combine with your quiz, on the same screen

Correct quiz answers unlock more play!

New Quizalize solo game modes
8 questions
Show answers
  • Q1
    What is bit rate?
    the number or bits stored in each audio sample
    the number of bits used to store the colour of the pixel
    The number of bits used per second of audio
    number of pixels in an image
    30s
  • Q2
    Calculate how many different colours a 5 bit image can use
    32
    16
    5
    10
    30s
  • Q3
    All bitmap images have some form of metadata
    True
    False
    30s
  • Q4
    What is colour Depth?
    The number of different colours available
    the size of the image
    The number of bits used for each pixel
    the number of samples taken a second
    30s
  • Q5
    What is meant by the term sampling frequency?
    The number of samples taken per second
    the length of the audio track
    the number of samples taken per minute
    the number of bits used to record each sample
    30s
  • Q6
    What is the formula that relates bit rate, sample frequency and sample size?
    Sampling frequency = Bit rate x Sample size
    Bit rate = sample size / sampling frequency
    Bit rate = sampling frequency x Sample size
    Sample Size = Sampling frequency x Bit rate
    30s
  • Q7
    What does compressing a file mean?
    Improving the quality of the file
    Increasing the size of the file
    Reducing the size of the file
    Always keeping the original quality of the file
    30s
  • Q8
    Lossless compression temporarily removes data
    True
    False
    30s

Teachers give this quiz to your class