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Numbers: B2+
Numbers: B2+
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Numbers: B2+

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At the back of the book there is:

a list of useful books in Further reading

helpful information in The grammar of fractions

a Glossary of key terms

a comprehensive Answer key

Chapter structure

Each chapter includes:

Aims – These set out the skills covered in the chapter.

A self-evaluation quiz – By doing this you are able identify what you already know on the subject of the chapter and what you need to learn.

Information on academic guidelines on how to develop academic skills – These sections will help you understand university practices and expectations so you know what is required.

Practical exercises – These help you to develop the skills to succeed at university. You can check your answers at the back of the book.

Tips – Key points are highlighted for easy reference and provide useful revision summaries for the busy student.

Glossary – Difficult words are glossed in boxes next to where the word appears in the chapter. There is also a comprehensive Glossary at the back of the book.

Remember sections – This is a summary of key points for revision and easy reference.

Glossary boxes

Where we feel that a word or phrase is difficult to understand, we have glossed this word/phrase. All definitions provided in the glossary boxes have been taken from the COBUILD Advanced Dictionary. At the end of the book there is a full alphabetical list of the most difficult words from the book for your reference.

Using Numbers

You can either work through the chapters from Chapter 1 (#u3799d65a-9258-5ee7-b7c0-e9a46035ec4b) to Chapter 12 (#litres_trial_promo) or you can choose the chapters and topics that are most useful to you. The Contents page will help in your selection.

Study tips

Each chapter will take between one and three hours. Take regular breaks and do not try to study for too long. Thirty to sixty minutes is a sensible study period.

Regular study is better than occasional intensive study.

Read the chapter through first to get an overview without doing any exercises. This will help you see what you want to focus on.

Try the exercises before checking the Answer key.

After doing the exercises in the book, try them again using your own research topic and reading materials. If possible, ask a more experienced colleague or friend to give you feedback on your work.

All university departments are different. Use the information in the book as a guide to investigating your own university department.

Write questions you can ask to find out how your department expects you to do research and collect and present data.

There is no one correct way of doing research and working with collected data. Use your experience of doing the exercises to learn what works best for you. Adapt the suggestions in this book to suit your learning style and context.

Learning to do research and work with data is an on-going process, which means you need to practise the same skills many times. Revise regularly.

Other titles

Also available in the Collins Academic Skills Series: Writing, Lectures, Research, Presenting, and Group Work.

1

Getting Started (#ulink_5a5bc926-baf0-54b8-9d68-8b36d8b2d97e)

Aims

look at numbers in everyday life

understand the purpose and use of statistics

learn key terms for working with numbers

learn the basics about spreadsheets

practise referring to and labelling graphics in writing

Quiz

Self-evaluation

Read the statements below. Circle the answers that are true for you.

Numbers and mathematics are very important in our everyday lives because we use them frequently when we manage our finances, go shopping, make travel plans, convert currency, follow instructions for a recipe or take measurements when we are building and creating things. If we carry out an academic study or investigation, then we need to use a branch of mathematics known as statistics which involves collecting and organizing data, making sense of our information and presenting findings.

Glossary

data You can refer to information as data, especially when it is in the form of facts or statistics that you can analyse. In American English, data is usually a plural noun. In technical or formal British English, data is sometimes a plural noun, but at other times, it is an uncountable noun.

This chapter begins by reminding us of the calculations and vocabulary that are used when we are working with money and taking measurements. It then provides an introduction to statistics, explaining where data is used in different subject areas and describing different categories of data. With a more technical focus, the chapter then describes how to use a computer program known as a spreadsheet which can help with storing and presenting data. Finally, an explanation is given of the use of graphics in academic writing, highlighting ways to refer to graphics in your text so that you can comment on your data and findings effectively.

Numbers in everyday life

In this section, we will explore some of the ways in which numbers are used in everyday situations. We will investigate taking measurements and working with money.

Money

It is important to know how to work with money so that you can:

Recognize the value of amounts of money

Estimate your expenditure

Often money calculations will involve the use of percentages and fractions. You will learn about these in Chapter 6 (#litres_trial_promo).

Glossary

estimate If you estimate a quantity or value, you make an approximate judgement or calculation of it.

expenditure Expenditure is the spending of money on something, or the money that is spent on something.

value In mathematics, the value of a symbol or letter is the amount represented by it.

The value of a digit in a number depends on its position in the number. In the following amounts of money, the digit 4 has a different meaning:

A place value diagram may help to remind you how to recognize the value of amounts of money. The highest number in the group is the maximum and the lowest is the minimum.

Estimating can be a useful skill when you are calculating your monthly expenditure because you can work out approximately how much your total bill will be without adding up all of the individual values. Estimating involves rounding prices up or down to the nearest ten pounds, dollars or euros so that you can work out the total more easily.

This list shows the actual expenditure with the estimated value for each cost:

So, when we add up the actual prices the aggregate total price for our shopping is £835.85 and the estimated cost is £840.

Glossary

round up/down If you round an amount up or down, you change it to the nearest whole number or the nearest multiple of 10, 100, 1,000, and so on.

aggregate An aggregate amount or score is made up of several smaller amounts or scores added together.

Measurements

Taking measurements is about finding a number that shows the amount or size of something. We are most often interested in measuring temperature, length, speed, time, capacity and mass. To make an accurate measurement, you would need to choose an appropriate measuring device and use the correct type of units on a scale. Here are some examples:

Glossary

capacity The capacity of a container is its volume, or the amount of liquid it can hold, measured in units such as litres or gallons.

mass In physics, the mass of an object is the amount of physical matter that it has.

Exercise 1

Match the correct unit of measurement with each item to be measured.

There are a number of key terms that are useful to learn when working with numbers and data. Test your knowledge of these by completing the following exercises.

Exercise 2

Use the words in the box to complete these sentences. You might need to change the form of the word.

accurate calculation fraction measurement

aggregate / total capacity mass percentage

approximately estimated maximum / minimum round up / down

1 The ________of 9, 10, 24, 6, 8, 5 is 62. It is also known as the ________.

2 The ________of the lecture theatre is 200 people.

3 Economic forecasters have ________that the economy will grow by 0.5% next year.

4 There are ________300,000 international students studying in the UK.

5 The spreadsheet automatically ________or ________to the nearest whole number.

6 The ________loan available is £5,000 and the ________loan available is £500.

7 The ________of a bowling ball is 7.25 kilograms.

8 ________measurements are essential in many scientific experiments.

Exercise 3

Use another word in the box in Exercise 2 to describe each item below.

1 1/3 ________

2 245 × 6 ________

3 98% ________

4 100 ml ________

Exercise 4

Put the word in brackets into the correct form in each of these sentences.

1 The closest ________was 2 years 4 months. (estimate)

2 There are a number of different ways to ________an average. (calculate)

3 There are ________1.3 billion people in China. (approximate)

4 The ________of another variable completely changed the outcome of the experiment. (add)

5 The values were ________and then used to find the average. (total)

6 The answers were cross-checked to ________predict the outcome. (accurate)

What is statistics?