Data and Graphing

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

• Add them together and divide by 2

• Write them both as the answer

• Find the value that is between the two middle numbers.

• Pick one

What is the mode?

• The average

• The number that appears most often.

• The largest number - the smallest number

• The number in the middle.

To find the _________ you add up all the numbers and then divide by how many numbers you have.

• Mean

• Median

• Mode

• Range

Mary read six books in January, four books in February, and eight books in March. What was the mean number of books read each month? __________

• 18

• 6

• 14

A histogram shows the distribution of students' ages in a school. If the 10-12 age group has the highest frequency, what does this tell us?

• Students aged 10-12 are the youngest.

• Most students are aged between 10 and 12.

• No students are older than 12.

• Students aged 10-12 are the majority.

A line graph illustrates daily temperatures over a week. If the line peaks at 90°F on Friday, what does this mean?

• The average temperature for the week is 90°F.

• The temperature rose to 90°F on Friday.

• Friday was the only warm day.

• The temperature was 90°F all week.

A scatter plot shows the relationship between age and height of children. If older children are generally higher on the y-axis, what does this imply?

• Older children are usually shorter.

• Height decreases with age.

• Older children are usually taller.

• Age and height are not related.

A scatter plot illustrates the relationship between the number of hours played on video games and grades. If there is a downward trend line, what does this suggest?

• Playing more video games leads to higher grades.

• Playing more video games leads to lower grades.

• There is no relationship between video games and grades.

• Grades increase as video game hours decrease.

A scatter plot shows the relationship between hours studied and test scores. If there is a trend line going upwards, what does this suggest?

• As study hours decrease, test scores increase.

• As study hours increase, test scores decrease.

• As study hours increase, test scores increase.

• There is no relationship between study hours and test scores.

A histogram shows the scores on a math test. If the 70-79 range has the tallest bar, what does this indicate?

• Most students scored between 70 and 79.

• The test was out of 70-79 points.

• One student scored between 70 and 79.

• The average score was between 70 and 79.