# Worksheet: Grouped Frequency Tables: Estimating the Mode and Identifying the Modal Class

In this worksheet, we will practice using grouped frequency tables to estimate the mode and Identify the modal class.

Q1:

Some sentences are taken from a book, and the number of words per sentence is counted.

 Number of Words Frequency 1–6 7–12 13–18 19–24 25–30 15 20 45 47 23

Using the given table, calculate an estimated mode for the number of words. Round your answer to two decimal places, if needed.

Q2:

Scarlett works in a call center. She records the duration of each call in the table.

 Call Duration (Minutes) Frequency 1–4 5–8 9–12 13–16 17–20 2 40 45 30 13

Calculate an estimated mode number of minutes, rounded to two decimal places if needed.

Q3:

Matthew likes collecting stamps. The cost of his favorite stamps is represented by the given table.

 Stamp Price (\$𝑃) Frequency 19.5<𝑃≤24.5 24.5<𝑃≤29.5 29.5<𝑃≤34.5 34.5<𝑃≤39.5 25 40 50 35

Use the table to calculate an estimated mode for the prices. Round your answer to two decimal places, if needed.

Q4:

The table shows some students' math test scores.

 Score Frequency 0–10 11–21 22–32 33–43 44–54 2 5 30 10 3

Calculate an estimation for the modal score of the math test. Write your answer to two decimal places.

Q5:

The table represents the time taken by some people to travel to work.

 Time (𝑡 minutes) Frequency 4.5≤𝑡<9.5 9.5≤𝑡<14.5 14.5≤𝑡<19.5 19.5≤𝑡<24.5 10 15 7 3

Calculate an estimation for the modal number of minutes the people take to travel to work. Write your answer to two decimal places if needed.