Lecture 2

Question 1

What is a frequency distribution ?

Answer 1

a method of organizing data by categorizing numbers based on the frequency of each numbers

Question 2

What are relative frequencies ?

Answer 2

what proportion would fall in any of the intervals
ROUND TO TWO DECIMALS
**f divided by N

Question 3

What is grouped frequencies distributions ?

Answer 3

group scores together

Question 4

What are culmative frequencies ?

Answer 4

Identify the number of number’s and add the number of scores in the bin below it
add f

Question 5

What are the rules of frequency distributions ?

Answer 5

• Every interval is mutually exclusive
• all intervals have the same width (i)
• intervals are continuous
• highest score is on top, lowest is at the bottom
• 1st # in a f.d must be a multiple of i
• the top and the bottom interval must have scores in them
• if scores falls on exact limit you need to set up a rule
• a good distribution would have more than 10 and less than 20 intervals