What do you do if there are two numbers in "the middle" when you are finding the median?

Add the two numbers in the middle & then divide by two.

Christina measured the masses of several seeds from two types of plants. The box plots show the masses of the seeds in milligrams. Which statement is best supported by the information in the box plots?

The median of the masses of the seeds from Plant L is equal to the median of the masses of the seeds from Plant K.

The least mass of a seed from Plant K is less than the least mass of a seed from Plant L.

The data for Plant K are more symmetrical than the data for Plant L.

The range of the masses of the seeds from Plant L is less than the range of the masses of the seeds from Plant K.

Waldo and Freddy caught fish one weekend. The dot plots show the lengths of the fish they caught. Which statement about the lengths of the fish caught by Waldo and Freddy appears to be true?

The range of the length of the fish caught by Freddy is greater than the range of the length of the fish caught by Waldo.

The data for Waldo’s fish and the data for Freddy’s fish are skewed to the right.

The median length of the fish caught by Waldo is greater than the median length of the fish caught by Freddy.

The data for Waldo’s fish and the data for Freddy’s fish are approximately symmetrical.

Ms. Barbosa gave the same test to her first-period and third-period seventh-grade math classes. The dot plots below show the results of the test for each class. Which of the following best compares the score distributions for the two classes?

The scores for the first-period class are nearly symmetrical, but the scores for the third-period class are skewed right.

The median score is the same for both the first-period and third-period classes.

The scores for the first-period class are nearly symmetrical, but the scores for the third-period class are skewed left.

Parker conducted a random survey at the mall to determine the number of songs in each genre that were downloaded by 40 students. The results are shown in the bar graph. Based on the information in the graph, which inference about the general population of students is valid?

Boys like rock music more than girls like rap music.

Girls like country music more than all other genres combined.

More girls than boys like rock music.

Boys like country music more than rock music.

Felicia earns $800 a month. The table shows her monthly budget. Which statement is supported by the information in the table?

Felicia spends 50% of her monthly budget on her car payment and cell phone.

Felicia spends 10% of her monthly budget on clothes and food.

Felicia spends 25% of her monthly budget on her car payment.

Felicia spends 20% of her monthly budget on college savings.

Math Statistics

Authored by Barbara White

Mathematics

7th Grade

CCSS covered

Used 3+ times

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30 questions

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MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the minimum value?

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the maximum value?

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Roger bowled 7 games last weekend. His scores are: 155, 165, 138, 172, 127, 193, 142. What is Roger's median score?

127

155

156

193

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What value is the lower quartile?

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the median?

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the interquartile range (IQR)?

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which box and whisker plot has the highest median?

Top plot

Bottom plot

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