Statistics in Business Essay Example for Free

Statistics in Business Essay Introduction This paper is going to discuss statistics in business. One will be able to understand there are different levels of statistics along with the importance statistics are in business decision making. Statistics in Business Statistics are a mathematical analysis of data collected. The data collected can in turn be used to show statistics in a number form. With the data collected, the analysis of the data, along with the financial reports from a business, one can make a better informed decision. Statistics in business is useful when making business decisions. The statistics can show important information to help judge what may happen in the future for a product or the need of a type of business. There are levels of measurement to help when data is gained to obtain the statistics. The levels of measurement include nominal, ordinal, interval, and ratio. Examples of these levels include the following: Nominal – Numbers on sports players jerseys for identification purposes. Ordinal – The letter grade students receive on homework assignments. Interval – This level does not have a true zero point. Ratio – When one number of measurement can be divided by another nonzero number and there is meaning to that number. At the ratio level of  measurement the number â€Å"0† has meaning as it represent there is nothing to show. Conclusion In conclusion one can see there are different levels of statistics and how important they are when making business decisions. Reference McClave, J. T., Benson, P. G., Sincich, T. (2011). Statistics for Business and Economics (11th ed.). : Pearson Education. (McClave, Benson, Sincich, 2011) Lind, D. A., Marchal, W. G., Wathen, S. A. (2011). Basic Statistics for Business Economics (7th ed.). : McGraw-Hill Company. (Lind, Marchal, Wathen, 2011)

The Life of Ludwig Van Beethoven :: Biographies

The Life of Ludwig Van Beethoven The rise of Ludwig van Beethoven into the ranks of history's greatest composers was paralleled by and in some ways a consequence of his own personal tragedy and despair. Beginning in the late 1790's, the increasing buzzing and humming in his ears sent Beethoven into a panic, searching for a cure from doctor to doctor. By October 1802 he had written the Heiligenstadt Testament confessing the certainty of his growing deafness, his consequent despair, and suicidal considerations. Yet, despite the personal tragedy caused by the "infirmity in the one sense which ought to be more perfect in [him] than in others, a sense which [he] once possessed in the highest perfection, a perfection such as few in [his] profession enjoy," it also served as a motivating force in that it challenged him to try and conquer the fate that was handed him. He would not surrender to that "jealous demon, my wretched health" before proving to himself and the world the extent of his skill. Thus, faced with su!ch great impending loss, Beethoven, keeping faith in his art and ability, states in his Heiligenstadt Testament a promise of his greatness yet to be proven in the development of his heroic style. By about 1800, Beethoven was mastering the Viennese High-Classic style. Although the style had been first perfected by Mozart, Beethoven did extend it to some degree. He had unprecedently composed sonatas for the cello which in combination with the piano opened the era of the Classic-Romantic cello sonata. In addition, his sonatas for violin and piano became the cornerstone of the sonata duo repertory. His experimentation with additions to the standard forms likewise made it apparent that he had reached the limits of the high-Classic style. Having displayed the extended range of his piano writing he was also begining to forge a new voice for the violin. In 1800, Beethoven was additionally combining the sonata form with a full orchestra in his First Symphony, op. 2. In the arena of piano sonata, he had also gone beyond the three-movement design of Haydn and Mozart, applying sometimes the four-movement design reserved for symphonies and quartets through the addition of a minuet or scherzo. Having confidently proven the high-Classic phase of his sonata development with the "Grande Sonate," op. 22, Beethoven moved on to the fantasy sonata to allow himself freer expression. By 1802, he had evidently succeeded in mastering the high-Classic style within each of its major instrumental genres-the piano trio, string trio, string quartet and quintet, Classic piano concerto, duo sonata, piano sonata, and symphony. Having reached the end of the great

Data communications and neetworks Essay

What is signalling? Signalling is a term used for the use of data being transmitted or carried across a medium for example in a network this could be a cat 5 cable. There has to be a way also for the receiver to interpret the data being sent and this is controlled by what’s called â€Å"encoding† however the word â€Å"modulation† also means the same thing. The signal that is sent it modified in a way for it to signify data. There are different types of transmission methods which differ from what type of medium you are using for example cables or wireless – there are four which are listed below: 1. Electrical – uses your cables to transport data between nodes 2. Radio Waves – this would be your wireless networks and could also include Bluetooth devices. 3. Light – this would use fibre optic cabling to send high speeds of data 4. Microwave Analogue & Digital Signalling There are two different types of signalling and these can be done in Analogue which means it changes all time in both amplitude and frequency. For example an analogue clock which has its hands moving all the time is changing the time all the time. Whereas with digital signalling which are representations of discrete time signals. For example a digital clock shows the minutes and not the seconds. When the information is being sent over a network when communicating, the information can travel in two forms, these are analogue and digital. The difference between the two is simple that analogue signalling never stops, and the information is being sent continuously, a good example of this signalling is clocks. An analogue clock will never stop, as the second hand is always ticking, therefore one can record an accurate reading of the time to the second, or even millisecond. For example, 1 hour 15 minutes and 24 seconds. Appose this to digital signalling where one can not get an accurate reading of a clock as it will only show the minutes. And therefore is not continuous. This is because the data is consisting of separate states, which are on or off. Sine Wave This type of wave has two properties a Amplitude & Frequency, the amplitude represents the strength of the signal which would be the volume of a sound for example somebody talking. If the amplitude is stronger than it will travel further. The frequency of a Sine Wave is the rise and fall of the wave from the zero to the top and then back to the zero – this is known as a cycle and is measured in Hz. The higher frequency the more cycles and therefore the lower the frequency the lower the cycles. Analogue The image below shows the analogue type of signalling it’s constantly changing and represents all the values in the wave range, there is always a value in between a value and another. http://moodle. derby-college. ac. uk/mod/resource/view. php? id=2346 Digital With digital signalling there are no in betweens like there in analogue its simply either 1 or 0, digital represents separate states and the change between these are practically unnoticeable. http://moodle. derby-college. ac. uk/mod/resource/view. php? id=2346 Asynchronous Transmission Asynchronous transmission is when signals are not sent at regular intervals. A good example of this would be a user using a keyboard attached to a computer. The characters are sent irregularly however the bits must be sent at known intervals. This is done by having accurate clocks at both ends of the link. The receiving clock starts when it receives the first bit from the transmitter, this is also known as the start bit. The receiver then expects to receive a known number of bits every tick of the clock. When it has received these bits the clock may stop; the last bit is known as the stop bit. Synchronous Transmission However when large volumes of data are to be transferred, the waste of the stop and stop bits with every character means that asynchronous transmission is not an efficient method. With high-speed devices, and buffered low-speed devices, data can be transmitted in large, timed, synchronous blocks. The clocks, in the receiver and transmitter, are kept synchronised by sending regular groups of special characters called SYN characters. Each time one of these groups is detected the receiver re-sets its clock, the data apart from this, it’s transmitted in exactly the same way as for asynchronous transmission. We can visualise the data as follows: Bit Synchronisation In a digital signal, as well as on occasion, an analogue one, all the different devices must know how often the signal varies along the transmission medium. For example, if the speed of the changes goes faster then the rate at which the device checks for changes, there will be a few of the bits missed between samples. If then sampling rate goes faster then the rate at which the transmission goes, the same bit will be used for a different sample a second time. To combat this fact, the devices are made to a universal standard so that they can work together in harmony, and there are set systems in place to allow the data to be transferred correctly. A lot of the current technologies use asynchronous serial transmission. This transmission method is used when data is not sent at regular intervals, but the bits themselves have to be sent with regularity, some examples of these are keyboard, mice or even modems. During the spans of time that no signal is sent, the line or other medium is in what is called an idle state. This is defined by the constant 1 signal being sent. One there is a packet of data that needs to be sent, for example, a key on the keyboard is pressed, the receiver first gets a start bit, a 0 state instead of a 1 to define the beginning of a piece of data now being sent to the receiver, it is then sampled and at the end of the data transmission, the signal returns to the original constant 1 state. Encoding Methods Encoding simply means that the information is converted from one format to another format. This is a process that the data needs to have done to it before the computer can understand it and process it. There are different types of encoding which are   Manchester Encoding is a data communications line code which provides a way of encoding binary data sequences. Each bit is related to by at least one voltage level transition. Manchester encoding is said to be self clocking this means that synchronisation of a data stream is possible. Huffman Encoding is another algorithm used for data compression; the coding uses a specific method for choosing the representation for each symbol. Unipolar Encoding This type of encoding has 2 voltage states, one of these states is zero and because of this its also know as Return to Zero (RTZ) Unipolar encoding is used in computers & logic and an example of where its used in computers is the TTL logic. Polar Encoding Polar encoding is when the digital encoding is on a level with zero volts for example the RS232 standard interface uses Polar encoding and unlike Unipolar the value doesn’t return to zero, its either a positive or negative voltage. With polar encoding it reduces most of the residual DC problem.

What caused the Great Depression - Free Essay Example

Sample details Pages: 2 Words: 661 Downloads: 4 Date added: 2019/05/13 Category History Essay Level High school Tags: Great Depression Essay Did you like this example? Introduction It all began, October 29th, 1929, the Stock Market come to a seizing halt and crisis began. Americas economy was sustaining itself on money that wasnt there from the stock market and it finally broke them to the point, at what the time felt like, of no return. The Great Depression swept the country and very soon people started to lose everything. Margins, people not buying American goods, and overproduction were some of the major contributions to the Great Depression. Body Paragraph One The Stock Market Crash was majorly caused by people buying margins. Margins are when investors would pay only a fraction of the price to have a stock. People would use these to make quick money without having to commit to spending large sums of their savings upfront. The problem with this is that margin buyers were incredibly sensitive to any declines considering they would have to pay back all the additional money that wasnt paid upfront. (Document 4) Because of this, any slight decline, investors would drop the stock all together and essentially lose nothing. Then, the cycle would start all over again and the economy in reality would lose money. There was no way of checking this, so investors could drop as many stocks into the market again as many times as theyd like without any repercussions. (Document 4) The economy began to lose more than what was coming in slowly milking out the rest of money in the stock. The economy was sitting on a pile of, what essentially was, imaginary mo ney. Don’t waste time! Our writers will create an original "What caused the Great Depression" essay for you Create order Body Paragraph Two Since the economy began decreasing, companies began to lay off workers. These workers couldnt buy products anymore. The increase of job loses made it harder for families to reach the bare minimum to support their family. Workers werent made and families suffered more everyday because they couldnt make up the lost of money. During this time, 21% of families less than $1,000 as an income which is not nearly enough for an average family, which needed at minimum $2,000 yearly income. (Document 2) Since Americans could no longer afford to buy products, the government attempted to stimulate the economy by asking countries to repay war debt from World War One by buying American goods. However, in 1930 America adopted the Hawley-Smoot Tariff, which raised tariff prices tremendously. (Document 5) Evidently, other countries did not like this and stopped American products and in return raised their tariff prices in retaliation. Now Americans couldnt afford foreign and domestic goods. Body Paragraph Three If America wasnt already struggling, industries began making too many products and nobody was buying. Buying installment plans, purchasing something over a period of time, was incredibly popular. In theory, this seems like a great idea, however people were buying installment plans faster than the income was expanding. meaning that nobody was buying new products and prices dropped and the economy dropped. (Document 1) The economy wasnt the only thing suffering from prices drop, but farmers were struck hard from it as well. The farm industry was over producing products and nobody was buying anymore, which force them to drop prices so low farmers werent making a profit anymore. (Document 3) Farmers lost so much money on dropped prices, and were hit the hardest during the depression. People couldnt afford the goods farmers made and they were stuck paying off the installment plans, so buying new products was the least of their concerns. Conclusion Paragraph The Great Depression was an awful time in American history and the major contributors to the suffering were: margins, people not buying American goods, and overproduction. The greatest decline in the American economy couldve been avoided if the U.S. government monitored the stock market better, had not raised tariffs, and had support systems for overproduction. Also, the lack of preparation and the stall of government help is what made it harder for the economy to recover. Not monitoring the economy better was a mistake that caused major downfalls and could have left America in ruins.