Numbers: B2+. Dawn Willoughby
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Название: Numbers: B2+
Автор: Dawn Willoughby
Издательство: HarperCollins
Жанр: Иностранные языки
isbn: 9780008101848
isbn:
Exercise 7
State whether each of the following variables is quantitative or qualitative:
1 number of pages in a book
2 names of students in a class
3 hair colour
4 weight of apples in a bag
5 height of trees in a park
Exercise 8
Answer these questions.
1 Explain the difference between a quantitative and a qualitative variable.
2 Give an example of each type of variable.
3 Explain why:
‘type of tree’ is a qualitative variable
‘number of pupils in a class’ is a quantitative variable
Exercise 9
Without looking back at the section ‘What is statistics?’, put these statistical stages into the correct order.
1 organize data
2 present data
3 collect data
4 interpret data
Exercise 10
Use the words in the box to complete these questions about the stages above.
data features patterns sets of data
display method present technique
1 What type of ________are we interested in?
2 Which data collection ________shall we use?
3 What ________shall I use to summarize my data?
4 What interesting ________or ________can I see?
5 What questions do my ________answer?
6 What is the clearest way to ________and ________my data?
Exercise 11
Match the questions in Exercise 10 to the stages in Exercise 9.
Using spreadsheets
You can store, organize and present your data in a computer program called a spreadsheet.
Glossary
grid A grid is something which is in a pattern of straight lines that cross over each other, forming squares. On maps the grid is used to help you find a particular thing or place.
row A row of things or people is a number of them arranged in a straight line.
intersection An intersection is a place where lines or roads meet or cross.
cell A cell is one of the small squares in a chart or spreadsheet into which you can add a single piece of data.
A spreadsheet appears as a table or grid containing a set of rows and columns. Rows are displayed horizontally on the grid and each one is labelled with a number (1, 2, 3 …); the label for each column is a letter (A, B, C …) and columns are displayed vertically across the grid.
The empty spreadsheet grid shown below has eight rows and five columns, but a spreadsheet in a computer program will have many, many more rows and columns.
The intersection of a row and a column is called a cell. Each cell has its own name, which consists of the letter of the column followed by the number of the row. The highlighted cell in the spreadsheet grid shown above is called C5 – it is where column C and row 5 meet.
Tip
Exercise 12
Look at the section of a spreadsheet below, and answer the questions.
| A | B | |
| 1 | Subject | Grade |
| 2 | Statistics | 80% |
| 3 | Information Systems | 67% |
| 4 | Sociology | 65% |
| 5 | Academic Skills | 53% |
| 6 | Business and Management | 74% |
1 What is contained in the following cells?
a A6
b B3
2 What is the reference for the cells that contain the following?
a The number ‘53%’
b The word ‘Statistics’
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