Data Representation

The numerical average of a data set

• Mode

• Mean

• Range

• Median

The data value that occurs most frequently

• mode

• median

• range

• mean

The middle value of a data set ranked in order

• mean

• mode

• range

• median

Find the mode:
5, 0, 9, 9, 3, 0, 5, 5, 4

• 9

• 5

• 3

• 7

A histogram displays the number of hours students spend on homework each week. If the 0-1 hour range has the smallest bar, what does this suggest?

• No students spend 0-1 hour on homework.

• Few students spend only 0-1 hour on homework each week.

• Most students spend 0-1 hour on homework.

• The data is incorrect.

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 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 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 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.