Definition of index number pdf

A simple index number measures the relative change in one or more than one variable. At each 3 hour increment the k index at an observatory is converted to an equivalent a index using table 1, and the 8 aindex. Index number definition of index number by the free. Jun 04, 2018 an index number is the measure of change in a variable or group of variables over time. With the aid of index numbers, the average price of several. Index definition, in a nonfiction book, monograph, etc. Instead of choosing the basket of period 0 or 1 or an average of these two baskets, it is possible to choose a basket that pertains to an entirely different period, say, period b. A stock index, also known as a stock market index, measures the weighted average of the value of selected stocks that follow the index to help investors and traders determine a markets return on investment.

Cant find any information on the yelloweyed junco in your guide to rare birds. Index number definition and meaning collins english. Index number theory and construction of cpi for complete micro data. Strictly speaking this is not an index number as ordinarily understood but a value relative.

Alphabetically arranged list of items such as names or terms given at the end of a printed text with page numbers on which the item can be found. Index numbers presented by deepak khandelwal prakash gupta. The larger the therapeutic index ti, the safer the drug is. An index number is a statistical derives to measure changes in the value of money. Three base and observation period weighted means of price relatives. In fact, it is typical statistical agency practice to pick a basket that pertains to an entire year or. It is written as a small number to the right and above the base number. Record the number of drops blows required to close the groove this distance. We need a better definition of her responsibilities. These links are multiplied together in order to make comparisons over many periods. Role of sentinel clinical laboratories in the lrn for biological threat preparedness. The a index reading varies from one observatory to the next, since magnetic disturbances can be local. The sign and magnitude of the langelier index show the waters tendency to form or dissolve scale and thus to inhibit or encourage corrosion.

The langelier index li is the difference between the actual measured ph and the calculated ph of water. It is typically used in economics to measure trends in a wide variety of areas including. It is a number which represents the average price of a group of commodities at a particular time in relation to the average price. Index number definition is a number used to indicate change in magnitude as of cost or price as compared with the magnitude at some specified time usually taken as 100. A valid test is one in which 15 to 35 blows are required to close the groove. During very severe geomagnetic storms it can reach values of up to 200 and very occasionally more. Read about the role of an index number in economics and how index numbers can be applied to all kinds of data, such as inflation or productivity. At each 3 hour increment the k index at an observatory is converted to an equivalent a index using table 1, and the 8. The base usually equals 100 and the index number is usually expressed as 100 times the ratio to the base value. The answer to the question what is the mean of a given set of magnitudes cannot in general be found, unless there is given also the object for the sake of which a mean value is required. Index numbers, stochastic, test and economic approaches to index number theory, hedonic regr ess ions, bilateral index number theory, multilateral indexes, fixed base versus chained indexes.

Information and translations of index number in the most comprehensive dictionary definitions resource on the web. An index number formed from the ratio of aggregate values in the given period to the aggregate values in the base period. Pdf index numbers are used to aggregate detailed information on prices and. Today, pure and applied number theory is an exciting mix of simultaneously broad and deep theory, which is constantly informed and motivated. A high bmi can be an indicator of high body fatness. There are many kinds of index numbers, including price indices, quantity.

We use your linkedin profile and activity data to personalize ads and to show you more relevant ads. An index number is commonly referred to as an index. Index definition is a list as of bibliographical information or citations to a body of literature arranged usually in alphabetical order of some specified datum such as author, subject, or keyword. In one sense nearly all index numbers are weighted by implication. Locate and select the index definition file pdx for the index, and click open. An index is a system by which changes in the value of something and the rate at which it. Index number definition of index number by the free dictionary. It is a number which represents the average price of a group of commodities at a particular time in relation to the average price of the same group of commodities at another time. When a number is expressed with exponents, or one number to a power of another, it is considered to be in index form. A common question in math will be to write a number in index form using a different number as base. In this section, index numbers are used to compare a value of a time series relative to another value of a time series.

An index number is a statistical value that measures the change. Index numbers are one of the most used statistical tools in economics. Oecd glossary of statistical terms weighted index number. Note that primes are the products with only one factor and 1 is the empty product. Calculated using mean years of schooling and expected years of schooling. The two main areas of statistics are descriptive and inferential. It rises or falls and is inversely related to the changes in the price level. This index number compares current prices of goods to the prices the goods were back in 1982. In addition, a cost of living index coli is a price index number that measures relative cost of living over time. Index number is calculated as a ratio of the current value to a base value and expressed as a percentage. Buy these notes in pdf format index numbers are intended to study the change in the effects of such factors which cannot be measured directly. To calculate bmi, see the adult bmi calculator or determine bmi by finding your height and weight in this bmi index chart. The air quality index aqi is a simple, colorcoded, unitless index that is an effective way to communicate air pollution concentrations to the general public the aqi provides an indication of the quality of the air and its health effects options exist for scaling the aqi categories to pm 2.

Number of people with low access to a supermarket or large grocery store. Mar 20, 2010 index numbers presented by deepak khandelwal prakash gupta. A ratio that compares the blood concentration at which a drug becomes toxic and the concentration at which the drug is effective. Indicator of average percentage change in a series of figures where one figure called the base is assigned an arbitrary value of 100, and other figures are adjusted in proportion to the base. The basic reproduction number is not to be confused with the effective reproduction number r or r e, which is the number of cases generated in the current state of a population, which does not have to be the uninfected state. Index numbers, index numbers statistics, index numbers. Total number of new entrants in the first grade of primary education, regardless of age, expressed as a percentage of the population at the official primary schoolentrance age. The index of a number says how many times to use the number in a multiplication. For a general ninput, moutput production process, the period t. It gives an approximate measure of the degree of saturation of calcium carbonate in water. In the chain system, a link is an index number comparison of one period with the previous period.

By definition, r 0 cannot be modified through vaccination campaigns. A simple index, also known as a relative, is a comparison involving only one item but an index whose calculation is based on several items is known. Index number concepts, measures and decompositions of. It should be noted that the laspeyres and paasche price indices do not satisfy this time reversal property. An index number is the measure of change in a variable or group of variables over time. We present these after first defining aggregates and quantity and price indexes that can be used to define the tfpg index formulas. Index numbers measure the value of an item or group of items at a particular point in. Estimated number of people in the census tract that lives more than one mile from a supermarket or large grocery store urban tracts or more than 10 miles from a supermarket or large grocery store rural tracts. The gini index or gini coefficient is a statistical measure of distribution developed by the italian statistician corrado gini in 1912. A real number can be expressed by a finite number of decimal digits only if it is rational and its fractional part has a denominator whose prime factors are 2 or 5 or both, because these are the prime factors of 10, the base of the decimal system. In addition to their broad role in the public health laboratory system, clinical laboratories work closely with local and. Index number a number that expresses the relative change in price, quantity, or value compared to a base period.

A number indicating change in magnitude, as of price, wage, employment, or production shifts, relative to the magnitude at a specified point usually taken as 100. The k index is a quasi logarithmic number and as such cannot be averaged to give a longerterm view of the state of the earths magnetic field. Index definition and meaning collins english dictionary. A stock index measures the change in a financial market, and it represents a portfolio of securities. The profitability index is an index that attempts to identify the relationship between the costs and benefits of a proposed project through the use of a ratio calculated as. The bestknown index number is the consumer price index, which measures changes in retail prices paid by consumers. Chapter 3 commonly used statistical terms there are many statistics used in social science research and evaluation. Oecd glossary of statistical terms value index definition. If the ti is small the difference between the two concentrations is very small, the drug must be dosed carefully and the person receiving the drug should be monitored closely for any signs of drug toxicity. Bromine number made easy the conditions for the potentiometric electrometric determination of the bromine number or bromine index include an acidic polar solvent consisting of glacial acetic acid 714 ml, trichloroethane or dichloromethane 4 ml, methanol 4 ml and sulfuric acid 16. In simple terms, an index or index number is a number displaying the level of a variable relative to its level set equal to 100 in a given base period. Statistics definitions an index number is the measure of change in a. Basic index number theory 15 introduction theanswertothequestionwhatisthemeanofagiven setofmagnitudescannotingeneralbefound,unlessthere. Index number noun the noun index number has 1 sense 1.

Basic index number theory international monetary fund. It must be clearly understood that the index number for the base year is always 100. To indicate the general level of access to primary education. It is important to note that r 0 is a dimensionless number and not a rate, which would have units of time. The third class of statistics is design and experimental statistics. The value of money does not remain constant over time. Definition definition, the act of defining, or of making something definite, distinct, or clear. Definition index numbers are quantitative measures of growth of prices, production, inventory and other quantities of economic interest. If the index number is used to measure the relative change in just one variable, such as hourly wages in manufacturing, we refer to this as a simple index. The following types of index numbers are usually used. Alphabetical index to the commerce control list description. Index numbers and types of index numbers emathzone. Note 2 some soils tend to slide on the surface of the cup, at a lesser number of blows than 15, instead of flowing. Its an alphabetical list in the back of the book that catalogs all of the subjects covered by page number.

Body mass index bmi is a persons weight in kilograms divided by the square of height in meters. So if the current index number is 180, it means that prices have. Index numbers are also differentiated according to the number of commodities or products included in the comparison. Data in the tables are those available to the human development report office as of 15 november, 20, unless otherwise specified. Formal index number theory is not needed for measurement when the definition of a measure is obvious and its properties are apparent. We base our index number theory on basic algebra or arithmetic.

In economics, index numbers generally are time series summarising movements in a group of related variables. May 19, 2020 a ratio that compares the blood concentration at which a drug becomes toxic and the concentration at which the drug is effective. Basic index number theory 371 approaches are also possible. In epidemiology, the basic reproduction number sometimes called basic reproductive ratio, or incorrectly basic reproductive rate, and denoted r 0, pronounced r nought or r zero of an infection can be thought of as the expected number of cases directly generated by one case in a population where all individuals are susceptible to infection. Alphabetically arranged list of items such as names or terms given at the end of a printed text with page numbers on which the item can be. A composite index number is a number that measures an average relative changes in a group of relative variables with respect to a base. An index number is an economic data figure reflecting price or quantity compared with a standard or base value. An index number in which the component items are weighted according to some system of weights reflecting their relative importance. Index number definition of index number by merriamwebster. Thus, the laspeyres price index, pl can be written as a baseperiod revenue shareweighted arithmetic average of the. A dictionary of statistical terms, 5th edition, prepared for the international statistical.