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BAR GRAPHS Using data to make graphs WHAT IS DATA? It is information. An example: In my fifth grade class we took a pizza lovers survey. We learned that ten kids liked pepperoni pizza best. Nine kids liked sausage pizza best. Seven kids liked cheese pizza best. This information is called DATA. If a mom was planning a pizza party for the class, she would need the pizza lovers survey DATA. I need to order 10 pepperoni, 9 sausage and 7 cheese pizzas. Your report card is another example of data. Math: 88% Reading: 94% My Language Arts teacher may not like me. Science: 75% Social Studies: 80% Language Arts: 55% WE USE GRAPHS TO ORGANIZE DATA. 100 90 80 70 60 50 40 30 20 10 0 Math Reading Sci SS L. Arts I know my parents will want to talk to my Language Arts teacher. A CHALLENGE. 60 50 40 Feet 30 20 10 0 Which bar on the graph represents 45 feet? THIS IS THE INFORMATION OR DATA…AND WHAT ABOUT THE GRAPH? Chickens rule! Animals on the farm Cows 124 Chickens 450 Turkeys 388 Horses 56 Mules 110 DATA WITH A GRAPH. Animals on the farm 500 Cows 124 400 Chickens 450 300 Turkeys 388 Horses 56 Mules 110 200 100 0 Cows Chickens Turkeys Horses Mules KIDS HAVE PETS: Salomon asked the kids in his class what kind of pet they have. This is the data he collected. Building a bar graph using this data helps us easily compare the number of pets kids have. All four (4) parts of a bar graph must be present for the graph to be complete. Title Scale Bars Labels ANSWER THE QUESTIONS 1. which animal most kids have as pets?. 2. Which two kinds of animals are owned by the same number of kids? 3. How many kids have either a dog or a cat? 4. The numbers up the side of the bar graph are called the ________. HOW CAN YOU COLLECT THE INFORMATION NEEDED TO CONSTRUCT A BAR CHART? BY MAKING A FREQUENCY TABLE FIRST! A Frequency table is a table that lists each item in a data set with the number of times it occurs. YOUR TURN! 1. Ask 10 students the following information and complete the table. FLAVOUR TALLY Chicken Cheese Mayonnaise Barbeque Bacon Insert any other flavours here 2. Construct your own frequency table CRISPS TALLY FREQUENCY 3. Make a a bar graph showing the favourite crisps in our class.