Data Collection
if you ask people their "Favorite Color," are you collecting words (qualitative) or numbers (quantitative)?
Qualitative
If you want to show how a plant grew taller every day for a week, what kind of line graph should you use?
A broken-line graph
in the list [2, 2, 5, 6], which number is the Mode?
2 it appears the most.
What is the most important part of a graph to read first so you know what the data is about?
the title
What is the probability that a dinosaur will walk into your classroom today?
0
What do you call it when you survey every single person in your class?
A Census.
What is the part of a graph that tells you what the colors or symbols stand for?
the legend
To find the Mean, you add all the numbers up and then do what?
Divide by how many numbers there are.
If a graph is missing labels on the side or bottom, why is it a bad graph?
You don't know what is being measured (e.g., is it 10 apples or 10 kilograms?)
If a bag has 10 red marbles and 1 blue marble, is it "Likely" or "Unlikely" you will pick red?
likely
True or False: The "number of pets" you have is a discrete number because you can't have half a cat.
True.
On a bar graph, which axis goes up and down (vertical)?
The y-axis
If you put all your data in order from smallest to largest, what is the middle number called?
median
If a bar graph scale counts by 10s (0, 10, 20...), where would you draw the top of a bar for the number 15?
halfway between 10 and 20
You flip a coin and it lands on Heads. Did you just find the Experimental or Theoretical probability?
experimental
Why should you ask a random group of people a question instead of just your best friends?
To make it fair (or to avoid bias).
If your data goes all the way up to 100, why is it a bad idea to count by 1s on your Y-axis?
The graph would be way too tall (or you would run out of room!). It is better to use a scale of 10s or 20s.
if a bar graph shows that 10 people chose "Blue" and 4 people chose "Red," how many more people liked Blue than Red?
6 people
Sometimes a graph "lies" by starting the numbers at 50 instead of 0. What do we call a graph that is trying to trick you?
a misleading graph
If an event has a 50% chance, what is a simple way to describe its likelihood?
Even odds or 50/50
If you find a chart in a science book instead of asking the questions yourself, is that Primary or Secondary data?
secondary data
If you are making a bar graph for the number of books read by 50 students, and the numbers range from 0 to 50, what would be a good interval (number to count by) for your scale?
counting by 5s or 10s
You have a set of data with a Mean (average) of 10. If you add a new number to that data that is exactly 10, does the Mean go up, go down, or stay the same?
it stays the same. why? Since the new number is the same as the average, it doesn't pull the average higher or lower. It's like adding a student who is the exact same height as the class average—the average height doesn't change!
What do we call a special poster that uses pictures, colors, and data to tell a story or give facts quickly?
an infographic
If a spinner has 4 equal colors (Red, Blue, Green, Yellow), how many sections are NOT Red?
3 (blue, green and yellow)