TEST on Unit 2 Probability and Statistics

Front

What is the probability of choosing an adventure book from a shelf with 6 mystery books, 5 science books, 4 history books, and 3 adventure books?

Back

1/6

Front

What is P(not A) if P(A) = 1/4?

Back

3/4

Front

How do you calculate the mean of a set of numbers?

Back

Add all the numbers together and divide by the count of numbers.

Front

If 80 students picked their favorite elective, and 40 chose band and choir, what percentage of students chose these electives?

Back

50% (40 out of 80)

Front

What is the median of the following heights: 158cm, 172cm, 164cm, 164cm, 167cm, 159cm?

Back

Median is 164cm.

Front

Define 'Probability'.

Back

Probability is the measure of the likelihood that an event will occur.

Front

What is the formula for calculating the mean?

Back

Mean = (Sum of all values) / (Number of values)

Front

What is the mode in a set of numbers?

Back

The mode is the number that appears most frequently in a data set.

Front

What is the range of a data set?

Back

Range = Maximum value - Minimum value.

Front

How do you find the median in a data set?

Back

Arrange the numbers in order and find the middle value.