Statistics and Probability

Question 1

What is the most common number in this dot plot?

Accepted Answer

4

Question 2

The key to a stem-and-leaf plot is 1 Ɩ 2 = 12. What is the leaf of 48?

Accepted Answer

8

Question 3

Which of these is an example of numerical discrete data?

Accepted Answer

number of pets that you have

Question 4

25% of the class prefer the colour blue. In a pie graph, what is the angle of the sector?

Accepted Answer

90°

Question 5

How many people were surveyed in the dot plot?

Accepted Answer

34

Question 6

If a die is rolled 120 times, how many times would you expect to obtain a "four"?

Accepted Answer

20

Question 7

What is the median of the data set: 3, 4, 5, 5, 6, 7, 8, 9, 16?

Accepted Answer

6

Question 8

What is the mean of this data set? 2, 6, 10, 5, 8, 5,

Accepted Answer

6

Question 9

What is the probability of selecting a heart from a deck of cards?

Accepted Answer

¼

Question 10

How could the probability of "a day in summer being hot" be described?

Accepted Answer

very likely

Questions 10