APLUSA Stats vs METAV 2go

3 common statistical tools used to analyze market research results: 1 - CONFIDENCE INTERVAL CALCULATOR 2 - COMPARING TWO PERCENTAGES 3 - SAMPLE SIZE CALCULATOR ----------------------------------------- 1 - CONFIDENCE INTERVAL CALCULATOR Level of accuracy in percentages observed: To conduct market research is to interview (or observe) a sample of individuals. The larger the sample, the greater the statistical accuracy. Confidence interval provides the level of accuracy of a given measure. FOR INSTANCE Upon interviewing a sample of 500 GP’s, 20% are found to be using Product A. So, what is, within the total population, the actual proportion of users of Product A. Assuming 5% risk level*, confidence interval is: • 20% +/-3.5 • [16.5%-23.5%] In other words, there is a 95% probability that the actual percentage of Product A users in the total population of GPs is between 16.5% and 23.5%. ------------------------------------- 2 - COMPARING TWO PERCENTAGES Statistical significance between 2 observed percentages: When comparing opinions (or attitudes) measured on two samples, a significance test is applied. Significance tests provide an indication whether observed percentages are significantly different or not. FOR INSTANCE Upon interviewing a sample of 500 GP’s, 20% are found to be using Product A. Equally, upon interviewing a sample of 150 cardiologists, 25% of those are found to be using Product A. Would such a result suggest that a larger proportion of cardiologists is using Product A? At 5% risk level*, the two percentages observed on these samples are not statistically different. In other words, there is a 95% probability that the actual proportion of Product A users among GPs’ total population is similar to the actual proportion of Product A users among cardiologists’ total population. ------------------------------- 3 - SAMPLE SIZE CALCULATOR Minimum sample size calculations: By taking into account an expected percentage, as well as the corresponding confidence interval, it is possible to calculate the sample size needed for a given market research survey. This application calculates the minimum sample of respondents needed in order to achieve the required level of research accuracy. FOR INSTANCE Research is needed to evaluate the level of use of Product A among anaesthetists. The desired confidence interval is +/-8. Approximately one third of anaesthetists is expected to be using Product A. How many anaesthetists need to be interviewed in order to achieve this margin of error? At 5% risk level*, for an expected percentage of 33%, with a confidence interval of +/-8, minimum sample size is 133 anesthetists. In other words, if you interview a minimum of 133 anesthetists, there is a 95% chance to get a confidence interval of +/-8 if the proportion of Product A users in the anesthetist sample is 33%.

The METAV app helps you plan perfectly for your visit to METAV – International Fair for Manufacturing Technology and Automation. The full exhibitor, product and programme directory for METAV is available for you to consult quickly and comfortably, even when you are on the move. The Maps connection and the interactive exhibition centre map allow you to plan perfectly for your visit to the trade fair and for your stay locally. Optimum smartphone and tablet integration is available for IOS operating systems. The offline search comprises selected contents from the database. Interactive site map and hall layout plan The interactive site map and hall layout plan provide perfect guidance and orientation around the exhibition grounds, featuring a variable zoom and comprehensive information on the exhibitors. Select any one of the halls and the stand occupancy for that hall will be displayed. Just click on a stand and you will see all available information on that particular exhibitor. Favourites Mark “your” exhibitors and products as favourites, thereby creating your own personal exhibition planner. The METAV app thus becomes your digital companion as you make your way around the trade fair! News With the METAV app you are always up to date. News relating to the trade fair and actual news from the exhibitors are available at your fingertips. Special Shows and Lectures At METAV attractive special shows, seminar and technology days again will gain attention. With a multifaceted supporting programme, the METAV complements the exhibitors’ displays by offering the visitors ideas and information for optimising their own plant operations. Info All key data pertaining to the trade fair are clearly presented for you to access. Information on opening hours, admission prices, special exhibit focuses, etc. will help you with your planning and preparation.