I Ready Lesson 29 Session 3

Ideas about Statistical Questions and Data Distributions


Learning Targets

•Recognize a statistical question as one that anticipates variability in the data related to the question.

•Understand that a set of data collected to answer a statistical question has a distribution which can be described by its center, spread, and overall shape.

•Summarize numerical data sets in relation to their context by reporting the number of observations.

By Chantele Quenard

Multiple Choice

Which one doesn't belong?

• How many students are in the class?

• How many siblings does each student have?

• Which sport do the students prefer?

Open Ended

Why did you make that choice?

Open Ended

Evaluate Rafael says that the question below is a statistical question because there is more than one possible answer. Explain why Rafael is incorrect and tell how you could modify the question so that it is a statistical question.

    Does my math teacher prefer reading history
    books or graphic novels?

Multiple Choice

Compare Which question would likely result in more variability if you asked each student in your school?

• About how many hours per week do you play sports?

• What grade are you in?

Discuss which one you chose and why it shows better variability.

DISCUSS!

Open Ended

Predict The dot plot shows the cost per ounce of different brands
of peanut butter sold at a store. The store plans to add a new
brand of peanut butter. The new brand has a 16-oz jar that sells
for $3.84.

Based on its cost per ounce, do you think the new brand is a good deal compared to the other brands?

Use the distribution shown in the dot plot to support your answer.

Draw

The data show the flight times, in minutes, of 21 toy drones.

PART A Use a model to represent the distribution of the flight times.

Make sure to record your information for the next question.

Open Ended

PART B About how long does a drone
typically fly? Explain your reasoning.

Draw

Exit Ticket Agustin collects the data set shown in the dot plot to answer the question How many days each week do students in my class eat a cafeteria lunch?

Why is Agustin’s question statistical? Describe the distribution of the data collected to answer this statistical question.