Year 6 Probability

Observed frequency is:

• What Will happen 
• What actually happens
• What should happen
• What I think Happens

Expected frequency is?

• What Should happen
• What does happen
• What Will Happen
• What I want to Happen

Relative frequency is:

• What actually happens / out of how many times the trial is run

• What actually happens

• What should happen
• What I think Happens

What are the possible outcomes?

• 6 bears

• orange, green, red, white, yellow

• 2 red, 1 green, 1 orange, 1 yellow, 1 white

• 2 , 1, 1, 1, 1

What is the probability of the spinner landing on yellow?

• 1/4

• 1/2

• 1/3

• 2/3

Trials means ______

• Frequency

• turns or tries

A bag has 4 green marbles, 3 red, 2 blue and 1 yellow. What is the probability of pulling a red?

• 3/10

• 3/6

• 1/9

• 1/3

The bar graph shows the results of spinning the spinner 200 times. What is the relative frequency of landing on a 3?

• 
• 
• 
• 

The probability of it raining today is 30%.  What is the probability that it will NOT rain?

• 30%
• 70%
• 100%
• 0%

Tags

CCSS.7.SP.C.5

The arrow is spun 15 times and landed 4 times on the section labelled Q. Which statement is true?

• The expected frequency is 1/5 and the observed frequency is 1/5

• The expected frequency is 4/5 and the observed frequency is 1

• The expected frequency is 1/5 x 4 and the observed frequency is 4

• The expected frequency is 1/5 and the observed frequency is 4/5