Statistics & Probability Revision (Yr 9) | Baamboozle - Baamboozle

How many students like dogs AND cats but not birds?

6

A coin is flipped and a die rolled. All outcomes are shown in the tree diagram. What is the probability of getting a 5 on the die?

2/12 or 1/6 or 0.17

A survey question asks how many cars you own. What type of data is being collected? (Continuous, Discrete, Ordinal or Nominal)

Discrete

Describe the distribution of data

It is a Bi-Modal distribution

How many class intervals are there?

6

What is the mean of the following data set: 3, 8, 8, 8, 11, 17, 17

10.29

Looking at the histogram, how many trees were included in the results?

31

Looking at the histogram, what is the size of each class interval?

5

Billy has won 5 of his last 30 chess games. What is the relative frequency of him winning the next game? (Answer as a decimal to 2 places)

0.17

The 2-way table shows results from students in a class. What is the probability of randomly picking someone who is left-handed?

11/37

A coin is flipped and a die rolled. All outcomes are shown in the tree diagram. What is the probability of getting a "Heads" and an even number?

3/12 or 1/4 or 0.25

A biased die is rolled 120 times and the results are shown in the table. What is the relative frequency of getting a number greater than 4?

40/120 or 3/4 or 0.75

A normal 6-sided die is rolled 120 times. How many 6's would you expect to get?

20

Two 6-sided dice are rolled and the numbers added. What is the probability of getting a sum of 2?

1/36 or 0.028

What is one difference between a histogram and a column graph?

No gaps between columns

What is the median for Seattle?

12.5

What is the median for Chicago?

10

How many people were surveyed?

11

Describe the distribution of data

The distribution is positively skewed

What is the range?

28

What is the median?

46

Looking at the frequency table, which score is the mode?

3

Find Pr (A ∩ B)

2/10 or 1/5 or 0.2 or 20%