### Math 10 Chapter 4 - Part C

 1. The standard deviation is the positive square root of arithmetic meana) Falseb) True
 2. In a series 0,1,4,6,7,9,12 the median is 6.a) Trueb) False
 3. In series 7,7,7,7,7 the dispersion is zero.a) Falseb) True
 4. In X = (åfx/åf) 'f' stands for averagea) Trueb) False
 5. The group which contains maximum frequency can be selected as model groupa) Trueb) False
 6. The class mark of interval (34-38) is36.a) Falseb) True
 7. For a data containing even member of items | n | the median is calculated as the average of (n+1/2) the itemsa) Falseb) True
 8. Arithmetic mean is highly effected by extreme values.a) Trueb) False
 9. Classification of data by two characteristics at the same time is called one way tabulation.a) Falseb) True
 10. Arithmetic mean is the most simple form of an average.a) Trueb) False
 11. The numerical figures obtained from any field of study are known as a valuea) Value b) Variablec) Constantd) Data
 12. A person who collects the data is known asa) Principal b) Investigatorc) Teacherd) Student
 13. The data directly collected from its source is called ________ dataa) Secondary b) Primaryc) Exactd) Medium
 14. If there are some specific values that a variable can take, we call such variable aa) Integral variable b) Discretec) None of the aboved) Random
 15. Any characteristic whose values are always different from one individual to another is calleda) Variable b) Primary Datac) Constantd) Discrete variable
 16. Any fixed quantity that has single value is known as _________a) Value b) Variablec) Datad) Constant
 17. A variable that can take all possible values in a given interval is called a ________a) Continuous variable b) Binary variablec) None of themd) Both a & b
 18. Numerical facts obtained on the first hand and recorded as they stand are called ____ dataa) Continuous b) Un groupedc) Variabled) Discontinuous
 19. The process of arranging the data into certain groups or classes having similar characteristics is known asa) Data b) Classificationc) Secondary datad) Observations
 20. The difference between the upper and lower limit of any two consecutive class intervals is calleda) Class boundary b) Class Limitc) Class interval sized) Classification

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