Multimedia: Our School Survey PDF

## 5 Multimedia: Our School Survey ### You will learn - how to plan a survery and data collection - how to use digital devices and applications to collect data - how to use software applications to analyse data - how to use software applications to create and deliver a presentation of your survery...

## 5 Multimedia: Our School Survey ### You will learn - how to plan a survery and data collection - how to use digital devices and applications to collect data - how to use software applications to analyse data - how to use software applications to create and deliver a presentation of your survery results In this unit you will plan and carry out a survey in your school. You will use a digital device to collect data. You will use a spreadsheet to store and analyse the data. You will use presentation software to share your survey results and analysis ### Collecting data with analogue and digital devices People have designed and used machines to collect data for many years. Chart recorders are *analogue* devices that were used to record different values (sometimes called parameters) on rolls of paper. A polygraph machine is a kind of chart recorder. A polygraph is sometimes used as a lie detector, as shown in the image. Each line on the graph paper shows the measurement of one parameter. Polygraph machines also record parameters for breathing, sweating and blood pressure. Nowadays, analogue chart recorders are often replaced by digital data loggers. The most famous kind of data logger is a **flight data recorder** (FDR). A FDR is fitted in most aircraft. It is a multi-channel recorder. It records at least 88 different parameters during a flight. ### Talk about... In this unit you will investigate the noisiest and busiest part of your school. What parts of your school are noisy and busy? What times of day are most busy? Can you agree on a single time and place to investigate? --- These include: - air speed - altitude - engine power - position of control levers and switches in the cockpit. The data can be used for servicing and investigating incidents. A FDR is often called a 'black box', but as the image shows it is painted orange, so it can be more easily found in an accident. ### Data logging with your own device Many people have a device that they use as a data logger: a smartphone or tablet. Smartphones have built-in *sensors* that record data all the time. These include: - GPS sensor to sense the device's location by measuring the distance to satellites in space - accelerometer and gyroscope to sense the device's position and direction of movement - microphone to sense sound - camera and ambient light sensor to sense light - proximity sensor to sense objects nearby - magnetometer to sense the phone's direction, such as a compass. ### Class activity Above this activity is a list of six sensors you might find in a typical phone. You will investigate the noisiest and busiest part of your school and interview people to see what they think. Which of the phone sensors might help you? How might you use them? If you know of any other sensors and apps that might be helpful then note those down. ### Did you know? The Sharp Pantone smartphone has a Geiger counter to sense background radiation. The phone was released at a time when many people in Japan wanted to measure radiation for health reasons. The coloured button switches on the radiation sensor. --- ## 5.1 Plan a survey ### In this Lesson You will learn: - how to plan a survey - how to identify the kind of data you want to collect - how to choose technology to help you collect data. ### Plan a survey Before you can plan your survey, you must decide what you want to find out. This is called your survey goal. You should be able to write down your survey goal in one or two sentences. The survey goal in this unit is: *Find out the busiest and noisiest areas of our school at different times of the day. Find out what people feel about the space and noise at these times.* ### Choosing the data you need to collect When you have decided on your survey goal, choose what data you need to collect to meet the goal. There are two types of data. - **Quantitative data** is numerical. It is used to measure and compare. In the example, the quantitative data is numbers of people and noise levels. - **Qualitative data** is descriptive. In the example, qualitative data will describe how classmates feel about the noise levels in school. ### Choosing a survey method Once you know what data you need, you can choose the way to collect it. This is called your survey method. Survey methods include: - questionnaires, which can be on paper or online - they are used to collect quantitative and qualitative data - interviews - they are used for qualitative data. - measuring devices (digital or analogue) - they are used to collect quantitative data. In the unit survey, digital measuring devices and interviews will be used to collect data. --- ### Choosing technology for a survey To make sure you choose the right technology, think about devices that can record the data you need. Think about specialist devices. Think about how you can use devices such as smartphones and tablets. In this unit, technology will be used in three different ways: | Data to be collected | Technology | | :---------------------------------------- | :------------------------------------------------------ | | Number of people moving around the school | A smartphone counter app and a stopwatch or timer app | | Level of noise in the counting places | A smartphone sound meter app | | People's thoughts about the level of noise| A smartphones voice reorder app | ### Activity Plan your survey. - Write down your survey goal. Make sure you include information about location and times. - Write down the data you will need to collect for your survey. Find quantitative and qualitative data types. Investigate the technology you can use to collect data. Are there any apps that can help you? --- ## 5.2 Prepare and carry out a survey ### In this lesson You will learn: - how to prepare for a data collection survey - how to record data for analysis - how to carry out a survey using digital data collection tools. ### Prepare for a survey To prepare for your survey, you need to form a team and agree on your roles. This survey involves using digital data collection tools. ### Agreeing team roles As the table shows, in this survey there are four roles in each survey team. | Team role | Duties | | :---------- | :---------------------------------------------------------------------------------- | | Surveyor 1 | Use the counter app to count the number of people at the survey location. | | Surveyor 2 | Use the sound meter app to record the sound level at the survey location. | | Time keeper | Use the stopwatch to make sure the sound and data collection start and end at the same time. | | Interviewer | Use the voice recorder app to record people's answers to a survey question. | You also need to agree on how to record your data for analysis later. ### Record data for analysis #### Quantitative data In this survey, there are two quantitative data items: - the number of people - the noise level. You need to agree a sample time for this data. If you collect data at different times or in different places, you need to use the same sample time so that you can compare the results. In the example in this unit, a sample time of one or two minutes would work. --- You will use a spreadsheet to record your data. First, decide on the headings you will need. | Time | Place | Number of people | Noise level recorded | | | :----- | :------- | :--------------- | :------------------- | :------ | | | | | Minimum | Average | | 09:30 | Corridor | 21 | 37db | 58dB | | 12:30 | Corridor | 76 | 67db | 74db | ### Qualitative data The qualitative data is the recorded answers to a survey question. You can use the voice recorder app on a smartphone or tablet. Ask each interviewee for permission before you record their answer. Write down the questions before you start. Your question could be: *How do you feel about the noise level in this location?* This is called an open question. This means people can't answer with just 'yes' or 'no'. The answer should tell you more about how people feel. ### Activity Prepare your survey. - Form a team. Agree the roles you will take. Agree where you will survey and at what time(s). - Create a paper template to record the quantitative data during the survey. Carry out your survey. - Use your chosen devices to record your data. - Take your sample of data: measure the sound level for two minutes and count the number of people passing the surveyor at the same time. - Record interview answers with at least three people. - Record your data on your template. --- ## (5.3) Analyse your data ### In this lesson you will learn: - how to transfer your data to a spreadsheet - how to create a graph that helps your audience understand the data. In the last you carried out you survey. This is called *fieldwork*.you collected you data. In this lesson will analyse you data ### Present your data so you can analyse it The is first step is to copy your data into a format that helps you analyse it. ### Transferring quantitative data In this lessonyou, you will transfer your survery data into a spreadsheet. The example in this lessonyou uses a formatted data table that helps you make charts. Download the spreadsheet 'Survey data'. To add a new graph, select all the data in the table. Click on 'Recommended Charts' on the 'insert' menu. Choose a chart from the list. ### Transcribing Qualitative data Copying qualitative data after a survey is called transcribing. Data accuracy is very important when you transcribe data. Your data should tell the truth, so it needs to be correct. You can type the words into a table or write them. --- | Time | Place | Answer | | :----- | :------- | :--------------------------------------------------------- | | 09:00 | Corridor | I don't mind it being a little bit loud in the corridor because I like to say hello to my friends before classes start. | | 12:30 | Corridor | Sometimes it gets very noisy at lunch time. Everyone is excited and in a ruch. I like it a little quieter when I want to study. | ### Analysing your data Use the spreadsheet's data table and charts to analyse the data. This should help you answer questions, such as: - When is our school busiest? - When is it noisiest? - Is our school always noisier when it is busier? Use your transcribed interview answers to answer questions, such as: - Are people more happy or less happy when it is noisy and busy? - What other feelings do people have about the noise levels? ### Activity Transfer your quantitative data using the instructions above. Transcribe your qualitative data. Review your data with your survey team. Write down your conclusions. --- ## (5.4) Create your presentation ### In this lesson - how to create a slideshow for your presentation - how to add soides and text - how to add images to your sildes ### Create a presentation You have collected and analysed your survey data. You will now use Microsoft PowerPoint to create a short presentation, images, charts and sound. Start your presentation with a title and an introduction. These two slides will just have test on threm. ### Add a title slide When you start a newpresentation, Microsoft PowerPoint gives you first slide a special layour for a title. Click in each box to write your 'title' and 'subtitle'. You title nad subtitle need to fig in each box. You cam also pyur mame in the subtitle box. Add more slices Once you have completed yout title slide, add an introduction slide, Your introductin slide swould help four audiecne understand whar pur presentation is about. Click on "New Slice" nad chocse the 'Title and Content' layout. Uiu can pyut a heasing at the top of the slicde and piur introductikn text in the bottom box. --- Use the Layout menu (in the Slides section) to change the layout of each slide. Some layouts allow you to put content side by side. Others let you include an image with a caption. ### How to insert images on your slides You can add an image by using the 'insert' menu to important a picture you have already saved on your conputer. The inage