Double Bar Graphs (Comparative Bar Graphs). Primary & Secondary Data Primary Data: –Information that is collected directly or first hand –Example: Data.

Slides:

Advertisements

Similar presentations

Bar Charts and Line Graphs

Advertisements

Drawing Bar charts correctly

Data collected by the researcher Observations, surveys, experiments Student primary source Questions created should help give more precise answers.

Circle Graphs Interpretation and Design. In the News.

Making the call Year 10 Some activities to immerse students in ideas about sample, population, sampling variability and how to make a “claim” when comparing.

The controlled assessment is worth 25% of the GCSE The project has three stages; 1. Planning 2. Collecting, processing and representing data 3. Interpreting.

All about graphs collection of information Data.

Experimental Statistics I.  We use data to answer research questions  What evidence does data provide?  How do I make sense of these numbers without.

MAL-001 – BAR GRAPHS AND PIE CHARTS.

CHAPTER 1: Picturing Distributions with Graphs

Intro to Graphs Vocab and Categorical Data. Distributions What is a distribution? The distribution of a variable tells us what values the variable takes.

After-School Activities and Hobbies We surveyed three different classes from three different grades: - Mrs. Sergnese_____ Grade 3 - Mrs. Mittof _______.

Quantitative data analysis

Data Management Grade 7. What’s the Story? Secondary data is information that was collected by someone else. Referring to information that was published.

A-ing You have two minutes to write a hypothesis about the difference between girls and boys You need to be able to test it by asking other pupils in your.

Data a collection of facts, such as values or measurements.

Use these to refresh your memory. Science at St Johns Controlled Assessment PRIMARY EVIDENCE AND RECORDING /4  Results recorded in a table  Clear headings.

 Research involves-  Collecting and collating information  Analysing and reporting the findings  Research helps identify  Factors that affect consumer.

Graphing day one Objective: I can formulate and answer questions by interpreting and analyzing displays of data, including multi-bar graphs or double line.

CBMS relax, and beat your score!!.

How do I collect sample data from population? 7.6 Sample Data and Populations Example 1 Collect data by randomly sampling A gym has 467 female members.

Make a circle graph for the results of a survey of students’ favorite seasons. Circle Graphs COURSE 3 LESSON 10-6 Favorite Season Number Spring 20 Summer.

How can we show information in a chart or graph? Bar Graphs Pie Charts.

Objective: How does a scientist set-up the appropriate graph?

Double Bar Graphs Re-cap... What are the different types of graphs we have learned about? What are some of the things are graph must include? What is.

MAKING A BAR GRAPH.  Bar graphs are best used for data that can be separated into groups/categories.  6 th, 7 th, 8 th graders  Boys, or Girls  US,

Data a collection of facts, such as values or measurements.

HOW TO WRITE FORMAL LAB REPORTS. WHAT ARE THE STEPS? 1. Name and Lab partners 2. Period 3. Title 4. Purpose and Hypothesis 5. Procedures 6. Data 7. Data.

Good afternoon fellow classmates and Mrs.Morgado. The topic we were focusing on is Modes of Communication. We surveyed three classes: gr.1, gr.4, and.

40 Number of Parking Tickets Monday Tuesday Wednesday Thursday Friday Pictograms and Bar Charts Friday Thursday Wednesday Tuesday Monday Line.

Please begin filling out the student interest survey while you wait.

Lecture PowerPoint Slides Basic Practice of Statistics 7 th Edition.

Statistics & Probability Level I Parts 1,2,3. School Numerical  Money earned  Pulse rate  Height  Height (belly button)  Arm span  Length.

Warm-ups September 19-23, Warm-up, Statistics Monday, September 19, 2011 Graph the distribution and calculate the mean, mode, and median of the.

Section 3.3: The Story of Statistical Inference Section 4.1: Testing Where a Proportion Is.

Aim: How do we analyze data with a two-way table?

Market Research Business Planning.

They conduct a small survey among 30 people, asking the question:

Warm Up Problem of the Day Lesson Presentation Lesson Quizzes.

POPULATION The set of all things or people being studied A group of people you want information about Examples – All the students of Fairwind – All the.

Purpose of Graphs Understanding when to use what type of graph.

What is Marketing Research?. Marketing Research The process of getting the marketing information needed for determining what customers want.

Studying Dieting & Eating Behaviour in School Age Children Using Data from E-Stat Presented by: Jodie Ferguson & Amanda Yarascavitch Section 10.

Graphing. Data Tables are a neat and organized way to collect data Graphs allow you to easily show the data in a way that people can draw conclusions.

STATISTICS AND PROBABILITY: DATA ANALYSIS Grade 2–12

Displaying Data  Data: Categorical and Numerical  Dot Plots  Stem and Leaf Plots  Back-to-Back Stem and Leaf Plots  Grouped Frequency Tables  Histograms.

Course Choosing the Best Representation of Data 9-8 Choosing the Best Representation of Data Course 3 Warm Up Warm Up Problem of the Day Problem.

Review Chapters 1-4. Example 1 In order to plan transportation and parking needs at a private high school. The administrators asked students how they.

MATHEMATICS Chapter 3: Data Management. GOALS In this chapter, you will be able to:  collect, organize, and analyze the results of a survey  make bar.

Using Graphs to Show Information

Our aim in this project is to help to raise funds and donations for schools; mainly focusing on secondary schools as they are bigger, with more people.

Use the information in the table to make a circle graph. COURSE 2 LESSON 7-9 No. of People in Household Number (in thousands) or more 26,724.

Graphs Class A Class B. Pictograph Types of Graphs Line Graphs Plots Circle Graph Histogram Single Double Stem & Leaf Line Single Double Box - and - Whisker.

Choosing the Best Representation of Data 10-7 Warm Up Warm Up Lesson Presentation Lesson Presentation Problem of the Day Problem of the Day Lesson Quizzes.

40 Number of Parking Tickets Monday Tuesday Wednesday Thursday Friday Pictograms and Pictograms Thursday Wednesday Tuesday Monday Bar Graphs.

Chapter 1- Lesson 2 Making Bar Graphs and Line Graphs

Market Research.

Objectives Construct and/or interpret bar graphs, line graphs, and circle graphs (2-3 and 2-4).

Warm Up Problem Find the surface area of the pyramid.

Chapter 1- Lesson 2 Making Bar Graphs

Misleading Graphs and Statistics

Misleading Graphs and Statistics

Which graph should I use?

“There are three types of lies. Lies, damn lies, and Statistics”

Bellwork Add new bellwork page to table of contents

Stage 6: Conducting market research

Misleading Graphs and Statistics

Presentation transcript:

Double Bar Graphs (Comparative Bar Graphs)

Primary & Secondary Data Primary Data: –Information that is collected directly or first hand –Example: Data collected by you through a survey Secondary Data: –Information that is not collected first-hand –Example: Data from a newspaper or Census At School (Canadian Statistics)

Discovery Activity With your partner, complete the “Discovery Activity” in the handout. –Orally discuss the answers to questions 1-3 –Write your answers to question 4

Discovery Activity – Bar Graphs

Discovery Activity – Questions to Consider 1.List 3 things these graphs tell you. 2.A) Approximately what percent of 13-year-old males spend no time exercising vigorously outside of school? B) Approximately what percent of 13-year-old males spend 7h or more exercising vigorously outside of school? C) What is the most common amount of time spent exercising vigorously by 13-year-old males? 3.Repeat question 2 for 13-year-old females. 4.A) Compare the two bar graphs. What differences can you see between males and females regarding exercise habits? Justify your observations. B) How could you make it easier to compare the two sets of data? Describe your ideas.

Easier to use a double bar graph?

50 students in a junior high school were surveyed to find what their preferred mode of transportation is. Girls Mode of TransportationNumber Bicycle15 Skateboard6 Walking9 Boys Mode of TransportationNumber Bicycle9 Skateboard8 Walking3 Draw a double bar graph to show and compare the data in percent. Calculating & Graphing Percents: Example

Calculating Percents The total number of girls surveyed is = 30 Girls Mode of Transportation NumberFractionDecimalPercent Bicycle1515/3015 ÷ 30 = x 100% = 50% Skateboard66/306 ÷ 30 = x 100% = 20% Walking99/309 ÷ 30 = x 100% = 30%

Calculating Percents The total number of boys surveyed is = 20 Boys Mode of Transportation NumberFractionDecimalPercent Bicycle99/209 ÷ 20 = x 100% = 45% Skateboard88/208 ÷ 20 = x 100% = 40% Walking33/203 ÷ 20 = x 100% = 15%

One reason to graph using percents is you can compare groups of data that have different sizes (e.g., girls – 30; boys – 20). Graphing Percents

Features you need for a double bar graph: Different colours for the bars Connect the bars in each category, with a space between each category Add a legend Features of a regular bar graph (titles, intervals etc.)

Key Ideas A double bar graph shows how two or more groups of data compare. You can compare groups of data that have different sizes by using percents.