8.2 More Stats (4/18/2025)

Last updated 8 months ago

10 questions

Essential Question: How can we analyze and interpret data to make informed decisions?

Learning Target: Students will be able to summarize and interpret data using measures of central tendency (mean, median, mode, range, and quartiles) and create visual representations (such as graphs and charts) to effectively communicate their findings.

Show your work for full credit.

Day 1 (4/17/25)

Finding Measures of Center

Required

Find the mean, median, mode(s), and range of each data set.

Make the data is organized from smallest to greatest.

Mean (average)=_______ 
Median (Q₂)=_______
Mode(s)= _______ 
Range=_______ 

Required

Find the mean, median, mode(s), and range of each data set.

Make the data is organized from smallest to greatest.

Mean (average)=_______ 
Median (Q₂)=_______
Mode(s)= _______ and _______ 
Range=_______ 

Required

Find the mean, median, mode(s), and range of each data set.

Make the data is organized from smallest to greatest.

Mean (average)=_______ 
Median (Q₂)=_______
Mode(s)= _______ 
Range=_______ 

Required

Find the mean, median, mode(s), and range of each data set. (Round your answer to two decimal places.)

Make the data is organized from smallest to greatest.

Mean (average)=_______ 
Median (Q₂)=_______
Mode(s)= _______ 
Range=_______ 

Required

Find the mean, median, mode(s), and range of each data set. (Round your answer to two decimal places.)

Make the data is organized from smallest to greatest.

Mean (average)=_______ 
Median (Q₂)=_______
Mode(s)= _______ 
Range=_______ 

Interpreting Data

Required

The stem-and-leaf plot to the left shows the prices of homes that recently sold in a neighborhood. Find all the measures of center.

Mean (average)=_______
Median (Q₂)=_______
Mode(s)= _______ 
Range=_______ 

How many homes sold for less than $205,000? _______ 

Required

The stem-and-leaf plot below shows the amount of weight loss in one month by employees
participating in a challenge. Find all the measures of center. (Round your answer to two decimal places.)

Mean (average)=_______ 
Median (Q₂)=_______
Mode(s)= _______ 
Range=_______ 

How many people participated in the challenge? _______ 

How many employees lost at least 7 pounds? _______ 

Required

The histogram shows the number of text messages sent each day by a group of students. Use the histogram to answer the questions



How many students sent between 10 and 19 text messages?_______ 
How many students sent more than 29 text messages?_______
Which interval contains the fewest text messages? _______and _______ 
What percent of the students sent between 40 and 59 text messages? (Remember to find percent means (part/whole)*100)_______ 

Required

The histogram shows the scores from a recent math test. Use the histogram to answer the
questions. (Round your answer to 2 decimal places)

How many students scored below an 81%?_______ 

Which interval contains the most scores?_______ 

What percent of the students scored no higher than 60%? (Remember to find percent means (part/whole)*100)_______ 

What percent of the students scored at least an 81%? (Remember to find percent means (part/whole)*100)_______ 

Required

The box-and-whisker plot below represents the heights of a group of students. Give the five
number summary, then answer the questions below.

Minimum=_______ 
Maximum=_______
Lower Quartile (Q1)=_______ 
Median (Q2)=_______ 
Upper Quartile (Q3)=_______ 

What is the interquartile range?_______ 
What is the range?_______ 
What percent of the students are between 56 and 60 inches tall?_______ 
What percent of the students are at most 74 inches tall?_______ 

Does the data vary more above or below the median? (Which half of the graph is longer?_______ 