IMPCB - Math and Statistics I

What type of data is lost when you turn a computer off?

• ROM

• Hard Drive

• RAM

• Magnetic Tape

Random number generators randomly generate numbers

• True

• False

What is the most fundamental unit of information in a computer?

• bit

• int

• bool

• byte

A computer stores a 3D CT or MR image set as ____

• A group of values corresponding to element intensity levels

• An array of individual images with one image per Byte

• A GPU (graphics processing unit)

• A vector file

What is the component of a computer which reconstructs a CT image?

• CCD

• I/O board

• CPU

• RAM

How much storage is required for store an ASCII character?

• 1 bit

• 16 MB

• 1 MB

• 8 bits

512 x 512 images are stored on a 700MB disk. Each pixel is 16 bits. How many images can

the disk hold?

• 1,400 images

• 3,500 images

• 2,800 images

• 512 images

For a Poisson distribution with a mean of 10, what is the probability of obtaining exactly 10

counts?

• 38%

• 66.7%

• 12.5%

• 3.3%

What is the equation for the average function value?

• 
• 
• 
• 

Sample A is measured producing 20,000 counts. Sample B is measured under identical

conditions yielding 15,000 counts. Assuming standard uncertainty for each measurement, what

is the total uncertainty of the ratio of sample A to sample B?

• 0.005

• 0.17

• 0.014

• 0.75