# Tip 1: How to analyze graphics

The schedule can be linear, in the form of bars and, so-called, "Japanese candles". The most popular and most commonly used species is a linear graph, when one quantitative indicator corresponds to one time sample. For most analytical calculations this is quite enough. To build such a chart, you will need indicators at certain time intervals. For example, the sales volume for each day. Analyze**graphics** it is better in a few years to identify common trends.

Compare several graphs for the year. Depending on what is the subject of the study, determine how the parameters vary with the season. For example, sales of soft drinks in the summer months are significantly increasing. The same applies to finishing materials, since the renovation of apartments is also carried out by the population during the warm season. Such seasonal fluctuations will allow to adjust the delivery of goods to the warehouse in such a way that neither their overstocking nor the deficit arise.

Analyzing the daily schedule, you will be able to notice not only seasonal fluctuations in demand. If its line is sawtooth, then look at what days of the week there are peaks of sales. Most likely, it's Saturday and Sunday. Such predicted periodic highs of buying activity will also help you to take this into account in the work of your store.

If you collect data for each type of goods, you can study the trend - an upward or downward trend, covering the fluctuation in demand for a good over a long period of time. The trend is characterized by a sequence of highs and lows, but with an upward trend, each next pair of high and low is higher than the previous one. The trend will help you determine which product is growing in popularity, and which one is declining.

With the notion of "schedule", any person is constantly confronted. Everyone has a hearing: a schedule of the function, a train schedule, a sales schedule and a graph of temperature changes. They are used not only by schoolchildren, who study the change in quantitative indicators in time. This is a convenient form of information presentation, which is used in a wide range of areas of everyday human activity.

It is known that the most convenient for perception is the graphical form of data representation. At its core, the graph is a display of the change in one of the parameters, depending on the change of the other. So, in mathematics, the graph of a trigonometric function displays its magnitude depending on the angle change, in statistics it is the mapping of quantitative indicators over certain periods over a period of time.

Based on the observations and measurements, the graph representing the curve allows us to understand at first glance how the indicators changed over time, analyze them and make a prediction about how a particular process will evolve in the future, identify trends in this development, its conditions and prerequisites. A rectangular coordinate system is used to plot the graph. On the abscissa axis, fixed values, for example, time, with a certain identical interval-scale, are usually deposited. The ordinate represents the measured or calculated values of the function.

Graphs are very popular among statisticians and financiers. These time series are used to analyze the profitability of a huge number of securities, the forecast of price changes and inflationary processes. Having data on the value of a security or the price of a certain set of products - the consumer basket for a fixed period of time, experts can analyze them and predict the growth or rise in prices, inflation.

When plotting charts, the choice of the amount of time that will be displayed on them depends on the tightness of the data. Data can be obtained several times a day, daily, weekly and monthly. The smaller the gap between measurements, the more detailed and accurate the graph will be. But, at the same time, the more compressed the data on the graph, the more information can be reflected on it.