EOC EOC Statistics and Probability

Question 1

What is the 'mean' of a data set?

Accepted Answer

The sum of all values divided by the number of values

Answer

The middle value when data is sorted

Answer

The most frequently occurring value

Answer

The difference between the highest and lowest values

Question 2

In a data set, what is the 'median'?

Accepted Answer

The middle value when data is arranged in order

Answer

The average of all values

Answer

The most common value

Answer

The range of the data

Question 3

A bag contains 3 red marbles and 7 blue marbles. What is the probability of randomly selecting a red marble?

Accepted Answer

3/10

Answer

3/7

Answer

7/10

Answer

1/3

Question 4

What does a 'box plot' (box-and-whisker plot) display?

Accepted Answer

The five-number summary of a data set

Answer

The exact values of every data point

Answer

The frequency of each value

Answer

The correlation between two variables

Question 5

What is the 'range' of a data set?

Accepted Answer

The difference between the maximum and minimum values

Answer

The average of the data

Answer

The middle value of the data

Answer

The most common value in the data

Question 6

Which of the following represents mutually exclusive events in probability?

Accepted Answer

Flipping heads and flipping tails on the same coin toss

Answer

Rolling a 4 and rolling an even number on a die

Answer

Drawing a red card and drawing a queen from a deck

Answer

Getting an A and passing a test