Box & Whisker Plot Warmup

When finding the median, what do you do if there are TWO numbers in the middle?

• You write both numbers for your answer.

• You choose the larger number.

• You cross them out-- there is no median.

• You add them together and divide by 2.

Answer explanation

When there are two middle numbers in a data set, the median is found by averaging them. This means you add the two numbers together and divide by 2 to get the median value.

What is the minimum?

• The middle number.

• The smallest number.

• The largest number.

• The most frequent number.

Answer explanation

The minimum refers to the smallest number in a set. It is the lowest value, distinguishing it from the middle, largest, or most frequent numbers.

What is the maximum?

• The middle number.

• The smallest number.

• The largest number.

• The most frequent number.

Answer explanation

The maximum refers to the largest number in a set. Therefore, among the answer choices, 'The largest number' is correct, as it directly defines the maximum value.

What is ALWAYS your first step when given a set of data?

• Put the numbers in order from greatest to least.

• Put the numbers in order from least to greatest.

• Find the median.

• Find the quartiles.

Answer explanation

The first step when given a set of data is to put the numbers in order from least to greatest. This helps in identifying the median and quartiles accurately, making it essential for further analysis.

When creating a box-and-whisker plot, the data is broken into ___ sections.

• 2

• 3

• 4

Answer explanation

When creating a box-and-whisker plot, the data is divided into 2 main sections: the box, which represents the interquartile range, and the whiskers, which extend to the minimum and maximum values. Thus, the correct answer is 2.

What does the "Q" stand for in Q1, Q2, and Q3?

• Quadrants

• Quartiles

• Quarts

Answer explanation

The "Q" in Q1, Q2, and Q3 stands for "Quartiles," which are values that divide a dataset into four equal parts. Each quartile represents a specific portion of the data, making "Quartiles" the correct choice.

What is the median?

10, 25, 5, 20, 15

• 5

• 25

• 15

• 20

• 10

Answer explanation

To find the median, first arrange the numbers in ascending order: 5, 10, 15, 20, 25. The median is the middle value, which is 15 in this case.