First-Hand vs.
Second-hand Data
Second-hand Data
What is first-hand data?
Data you personally collect
This part of a graph tells what the graph is about.
What is a title?
This part of a graph shows the two colours of the bars and what they represent.
What is a legend?
Why do we use double bar graphs?
To compare two sets of data
What is the difference between first-hand and second-hand data?
First-hand data = data you personally collect.
Second-hand data = data someone else collects.
What is the interval of Graph 2?
The interval of graph 2 is "2"
This part of a graph is the vertical line that is used to measure quantity.
What is the y-axis?
Using Graph 1, tell me a conclusion about the graph.
Boys like basketball a lot more than girls do.
Girls like soccer and track more than boys do.
Both boys and girls like baseball.
Give an example of a question that could be answered by first-hand data
What is the favourite animals of the grade 5 class?
This part of a graph is the horizontal line that is used to write the sets of data.
What is the x-axis?
This is the space between each value on the scale of the bar graph.
What is an interval?
Using Graph 2, tell me a conclusion about the graph.
Ms. Jones gives the most homework.
Mrs. Brown doesn't always give homework, but on Thursday she gave a lot.
Mrs. Smith gives almost the same amount of homework every day.
Give an example of a question that could be answered by second-hand data.
This part of a graph tells what the y-axis intervals mean.
What is a side label?
This part of a graph tells what the x-axis groupings are.
What is a bottom label?
Using Graph 1, which sport would you choose to play as a class? Why?
I would choose baseball because both boys and girls like it.
Give examples of first-hand and second-hand data
First-hand = Airplane experiment
Second-hand = weather predictions online
What is missing from graph 1?
Missing the side and bottom labels, the title.
Label graph 1 properly
Side label, Bottom label, Title
Using Graph 2, which teacher would you like for homework? Why?
I would choose Mrs. Brown because sometimes she doesn't give very much homework.