1. Spreadsheets and Data Displays
LESSON 11-2
Definitions
A spreadsheet is an electronic worksheet that organizes data in columns and rows. Spreadsheets can perform calculations and graph data using different types of graphs.
Line graphs show trends (patterns) over time. A double line graph compares two lines on the same set of axes.
A bar graph allows you to show the relative size of different categories. A double bar graph compares the relative size of two sets of data.
When more than one set of data is graphed, a legend identifies the different data sets, or series.
11-2

2. Spreadsheets and Data Displays
LESSON 11-2
Histogram vs. Bar graph
Histogram
usually represent “continuous data” – data that represents measured quantity
e.g. Height, weight, etc.
bars do not overlap and there is no gap between the bars
Bar graph
usually used to display “categorical data” i.e. data that fits into categories
e.g. Different types of icing sugar on donuts
bars have space between them
11-2

3. Spreadsheets and Data Displays
LESSON 11-2
Additional Examples
The spreadsheet below shows the number of graduates in dentistry and medicine.
a. Find the value in cell B5.
b. In what year were the number of
graduates from both schools the same?
The value in cell B5 is 43.
The number of graduates from both
schools were the same in 1996.
11-2

4. Spreadsheets and Data Displays
LESSON 11-2
Additional Examples
When did more people first obtain news from the radio than the newspaper?
The first year in which more people obtained news from the radio than the newspaper was 1990.
11-2

5. Spreadsheets and Data Displays
LESSON 11-2
Additional Examples
During what period of time did whole milk consumption decrease the most?
Whole milk consumption decreased the most between 1980 and 1985.
11-2

6. Spreadsheets and Data Displays
LESSON 11-2
HOMEWORK
Homework
Pick up your HW notebook at the beginning of 8th period today.
Lesson 11-2, pp , #s 4-12 evens, all, 24, 25
Record daily high and low temperatures
11-2