Characteristic of data: accessibility

Name:

Date:

Class:

Quick Questions

Shade in the A or B circle for each question.

1. Which data is more accessible to a teacher who only has a spreadsheet program?

A A file in a format that only specialist software can open

B A CSV file that opens in the spreadsheet

2. True or false: Data stored on a server is accessible to a user even if they have no permission to open it.

A False

B True

3. A student needs to update a shared class spreadsheet. Which permission makes the data accessible for this task?

A Write permission

B Read-only permission

4. Which choice best supports a user who is vision impaired and uses a screen reader?

A A chart saved only as an image with no description

B A table with clear column headings and text descriptions for charts

5. True or false: Accessibility only describes how fast data can be downloaded.

A False

B True

Match the Pairs

Draw a line connecting each item on the left to its match on the right.

Left column		Right column
1report.csv		AAn image with alternative text so a screen reader can describe it to a user with vision impairment
2<img src="graph.png" alt="Sales rose in 2024">		BA file saved in a common, open format that many programs and devices can open
3Permissions control who is allowed to open or change a file, so users who need the data must be given access		CThe image has no alt text, so a screen reader user cannot access the information. Add an alt attribute that describes the chart.
4A file format that the user's software cannot open makes data hard to use, so it should be saved in a format they can open		Dchmod +r survey.xlsx
5Data saved as results.xyz (special software needed)		EThe file is in an unusual format that most users cannot open, so the data is not accessible. Save it in a common format such as CSV or XLSX.
6<img src="chart.png">		FSave As: survey.csv

Definitions

Accessibility

Fill in the Blanks

Complete each line of code by filling in the missing parts.

# Students may view marks but not change them access = "____"

# Open format that any spreadsheet can read export("survey", format="___")

<table> <tr><__>Region</th><th>Sales</th></tr> </table>

<html ____="en-AU"> <title>Census results</title> </html>

Spot the Error

Shade in the letter of the line that contains an error.

Question 1

A File: sales_2024.csv

B Format: CSV (opens in Excel)

C Permission: none for all staff

D Accessible: yes

Question 2

A Data: staff survey results

B Users: blind staff member

C Format: scanned image only

D Tool: screen reader reads it

Question 3

A Teacher: no access

B Student: read only

C Teacher enters marks weekly

Question 4

A Goal: staff open it on phones

B Format: .xyz (special app)

C Result: all staff can open it

Question 5

A Purpose: staff run the tool

B Permission needed: read only

C Grant to: staff group

Answer Key

Characteristic of data: accessibility

Section A: Quick Questions

B — A CSV file that opens in the spreadsheet

A — False

A — Write permission

B — A table with clear column headings and text descriptions for charts

A — False

Section B: Match the Pairs

report.csv → A file saved in a common, open format that many programs and devices can open

<img src="graph.png" alt="Sales rose in 2024"> → An image with alternative text so a screen reader can describe it to a user with vision impairment

Permissions control who is allowed to open or change a file, so users who need the data must be given access → chmod +r survey.xlsx

A file format that the user's software cannot open makes data hard to use, so it should be saved in a format they can open → Save As: survey.csv

Data saved as results.xyz (special software needed) → The file is in an unusual format that most users cannot open, so the data is not accessible. Save it in a common format such as CSV or XLSX.

<img src="chart.png"> → The image has no alt text, so a screen reader user cannot access the information. Add an alt attribute that describes the chart.

Section C: Definitions

Accessibility — How easily the people who need data can find it, open it and use it, including having the right file format, the right permissions and support for users with disability.

Section D: Fill in the Blanks

<img src="chart.png" alt="Sales chart">

# Students may view marks but not change them
access = "read"

# Open format that any spreadsheet can read
export("survey", format="csv")

<table>
<tr><th>Region</th><th>Sales</th></tr>
</table>

<html lang="en-AU">
<title>Census results</title>
</html>

Section E: Spot the Error

C — Staff cannot use data they have no permission to open. To be accessible, the file needs read permission for all staff, not 'none'.

C — A scanned image has no text for a screen reader to read, so a blind user cannot access it. The data should be a text table with alt text.

A — The teacher has to enter the marks each week, so they need write permission as well as read. 'No access' would stop them from using the data.

B — A format that needs a special app will not open on every phone. A common format like CSV lets all staff open the data.

B — Read only lets users view the file but not run it. Staff who need to run the tool must be given execute permission.