Job classification codes and statistical codes for reporting are the two primary types of workers’ compensation codes. Sensitivity and specificity are statistical measures of the performance of a binary classification test that are widely used in medicine: . Use the data in Table 3.2 that relate to monthly household expenditure (in ₹) on food of 50 households and 3 Other factors affecting the comparability of crime statistics refer to the fact that only a varying proportion of criminal offences are Q.2- What is Meant by Geographical Classification? Q.5- Give the Names of Statistical Series on the Basis of Construction. For example, the Population of town can be grouped according to sex, age, marital status etc. For example, Population can be divided on the basis of marital status as married or unmarried etc. Mid Values Frequency Series Mid value frequency series are those series in which we have only mid values of the class intervals and the corresponding frequencies. The above-mentioned concept is for CBSE Class 11 Statistics for Economics – Meaning and Objectives of Classification of Data. Types of Statistical Classifications Chronological Classification. The grading system is not intended for use as a measure to predict operative risk. Q.14- What Do You Understand by Raw Data? Inclusive Series An inclusive series is that series which includes all items upto its upper limit. The term variable is derived from the word ‘vary’ which means to differ or change. Your email address will not be published. It is obtained by successively adding the frequencies of the values of the classes. The class frequency is the number of times the items corresponding to a class interval repeat in the series. Classes are sometimes called as targets/ labels or categories. Classification Predictive Modeling 2. (E) Continuous Series With Unequal Interval. etc.) _________ of data is the process of arranging data into homogeneous groups according to their common characteristics. Collection of Data; Organisation of Data Examples are assigning a given email to the "spam" or "non-spam" class, and assigning a diagnosis to a given patient … Qualitative Classification This classification is according to qualities or attributes of the data. Continuous Variable Variable that assume a range of values or increase not in jumps but continuously or in fractions are called continuous variables. Organisation of data refers to the arrangement of figures in such a form that comparison of the mass of similar data may be facilitated and further analysis may be possible. When data is classified on the basis of attributes, it is known as qualitative classification. 0406.20.90.20 is the Classification Number, specifying the exact type of grated or powdered cheese other than cheddar: Romano. Example: Income (Rs) No. Classification of Data :-The process of grouping data according to their characteristics is known as classification of data. Q.- What is Meant by Variable? Whenever we employ statistical methods for the collection, classification, presentation, analysis, and interpretation of quantitative data, we term statistics as a singular noun. NCERT Solutions for Class 6, 7, 8, 9, 10, 11 and 12. For example, the height of a single student is not a statistical data but the average height of students in a class is. Sensitivity measures the proportion of positives that are correctly identified (i.e. The class midpoint is equal to the average of the upper class limit and the lower class limit. This is true for other classes as well. Upper Limit of one class is not equal to the Lower Limit of the next class. Mid-value or Mid-point is the central value of a class-interval. For grouping or counting the number of observations, Lower limit (. What is statistical classification?what is its importance? the gap between (, It can be converted into Equal Interval Distribution by either. On the basis of general characteristics, statistical series are of three kinds: According to construction, statistical series can be categorized as : Q.- Briefly Discuss the Various Types of Continuous Series. These series may be presented in two ways, Frequency Series Frequency series may be of two types. Starting from the objective to characteristics of good classification, this chapter covers it all. Those variables which can take all the possible values (integral as well as fractional) in a given specified range are termed as continuous variables. Multi-Label Classification 5. Share with your friends. Statistics for Economics Class 11 Notes Chapter 3 Organisation of Data Organisation of Data Organisation of data refers to the arrangement of figures in such a form that comparison of the mass of similar data may be facilitated and further analysis may be possible. To present data in a simple, logical and understandable form. Diagnostic and Statistical Manual of Mental Disorders (DSM) The DSM is one of these classification systems, developed in the US in 1952. NACE groups organizations according to their business activities. Open End Series An open end series is that series in. The data arranged according to location or geographical considerations form a spatial series. Classification of data is the process of arranging data in groups or classes on the basis of certain properties. ... Statistical Series Systematic arrangement of statistical data Raw data: Data collected in original or crude form. c. To bring out points of similarity and dissimilarity among various groups. Workers' compensation exists to provide financial assistance and medical treatment to employees who are injured on the job. Or. Types of Statistical Series Statistical series are of two types. Chronological Classification When data are classified on the basis of time, it is known as chronological classification. Statistics in its Singular Sense. Classification is the process of predicting the class of given data points. Frequency refers to a number of times a given value appears in a distribution. NACE (Nomenclature of Economic Activities) is the European statistical classification of economic activities. Geographical Classification This classification of data is based on the geographical or locational differences of the data. For example, mid-point of class 10-20 will be: Mid-point = (10+20) / 2 = 15. Frequency distribution is also known as continuous series or series with class-intervals, or series of grouped data. Variables which are capable of taking an only exact value and not any fractional value are termed as discrete variables. To consolidate the volume of data in such a way that similarities and differences can be quickly understood. In such a classification, data are classified either in ascending or in descending order with reference to time such as years, quarters, months, weeks, etc. Organisation of Data It is (. The above-mentioned concept is for CBSE Class 11 Statistics for Economics – Meaning and Objectives of Classification of Data. A variable refers to quantity or attribute whose value varies from one investigation to another. Thus the use of class mark instead of the actual values of the obervations in statistical methods … For example, we may present the figures of population (or production, sales. What are the stages of statistical study? Cumulative Frequency Series It is that series in which the frequencies are continuously added corresponding to each class-interval in the series. Example in the class 40-50 the class interval is 10 (i.e. The modern classification system consists of 6 categories, as described below. Data classification is the process of sorting and categorizing data into various types, forms or any other distinct class. It is known by adding the values of upper and lower limits and dividing the total by 2. Further statistical calculations are based only on the values of class mark and not on the values of teh observations in that class. 50 minus 40). ; Specificity measures the proportion of negatives … 3.11 Miscellaneous Topics 3.12 Special Topics: Statistical Nature of Data 3.13 Special Topics: Classification Issues for Washington, DC 3.14 Joint Financial Activities of Governments 3.15 Tables Chapter 4. It searches only titles, inclusions and the index and it works by starting to search as you type and provide you options in a dynamic dropdown list.. You may use this feature by simply typing the keywords that you're looking for and clicking on one of the items that appear in the dropdown list. Briefly Explain Its Two Kinds. Classification is the process of arranging things in groups or classes according to their resemblances and affinities and gives expression to the unity of attributes that may exist amongst a diversity of individuals. Despite each being as widely used as the other, the ICD and the DSM conceptualise and classify mental disorders in different ways. Many countries are now updating their national classification either based on ISCO-08 or to improve alignment with the new international statistical standard. The most common workers’ compensation codes are classification codes. The third chapter of NCERT Statistics book Class 11 deals with a significant concept of statistics, i.e., classification. Further statistical calculations are based only on the values of class mark and not on the values of teh observations in that class. Once a data-classification scheme has been designed, security standards that stipulate proper approaching practices for each division and storage criteria that determine the data’s lifecycle demands should be discussed. Cumulative frequencies may b expressed on the basis of lower class limits of the class-intervals. Answer: The stages of a statistical study are. Thus, both class limits are parts of the class interval, e.g., the class intervals of 0-5, 6-10, 11-15, and so on are inclusive. Since ancient times, attempts have been made to classify mental disorders. Imbalanced Classification Quick Search Help. When data is classified on the basis of characteristics which can be measured, it is known as quantitative classification. Q.- What is a Statistical Series? (ii) Spatial Series (Geographical Series). 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Question 2. Class Frequency. This is true for other classes as well. (B) Statistical Series Can Be Divided as: (a) On the Basis of General Characteristics. Here if we take length of class interval as 10 then the number of class interval will be 55/10 = 5.5 or 6 which is less than the desired number of classes. Class frequency: The number of observations corresponding to a particular class is known as the frequency of that class . In this series there are no class intervals and a particular item in the series. To point out the important characteristics of the data at a flash. (iii) Condition Series. Concept of Variable A characteristic or a phenomenon which is capable of being measured and changes its value overtime is called a variable. Cumulative frequencies may be expressed on the basis of upper class limits of the class-intervals. Q.9- Which Series Exclude the Upper Limit of the Class-interval? b. 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