Statistics

Graph Building

100

Name three graphs we worked on this unit

double bar graphs

stem and leaf plots

dot plots

200

What types of things can we learn from categorical data?

Various responses accepted

300

Describe a scenerio that would be BEST REPRESENTED with a double bar graph

Double bar graphs facilitate comparisons across groups and help to highlight trends and differences.

Ex: comparing answers to the same survey from different grades

400

Draw a Stem and Leaf plot for the below data

16, 12, 9, 5, 12, 22

See Response

500

What are the axes called on a graph? Can you label them?

X-axis = horizontal

Y-axis = vertical

Data Sets

100

Describe Frequency

a count of categorized data…but it is not the data value itself. 

It’s how often that data value occurs in the DATA SET

200

Determine the frequency...(draw tally marks on board)

Yay!

300

Build a frequency table for the below data

5, 6, 7, 5, 8 , 6, 6

See whiteboard response

400

Use the last group's frequency table to build a dot plot

See whiteboard response

500

Identify the STEMS and Leafs

145

16

9

Stems: 0, 1, 14

Leafs: 5, 6, 9

Analyze Data

100

A survey was conducted to show favourite foods.

16 people chose pizza

12 people chose cheeseburgers

15 people chose pasta

What food was the most popular

pizza

200

Reading the same survey question as above, how many people participated?

16 people chose pizza

12 people chose cheeseburgers

15 people chose pasta

43

300

What is mode?

The mode is the category with the HIGHEST frequency!

400

What is the mode of the below data? and why?

11, 7, 8, 8, 7, 9, 10, 10, 7, 8, 9, 9, 8, 11, 9, 8 

Eight

500

View the stem and leaf plot on the board and interpret that data

See responses