[{"id":240627,"question":"The positive square root of mean of the squared deviations of x<sub>i</sub>(i=1, 2---------------------,n) observations from their arithmetic mean is called:","choices":[{"text":"Harmonic mean","value":"A"},{"text":"Range","value":"B"},{"text":"Standard deviation","value":"C"},{"value":"D"},{"value":"E"}],"correctAnswer":3},{"id":240626,"question":"The mean of the squared deviations of x<sub>i</sub> (i = 1, 2, -----------------,n) observations form their arithmetic mean is called:","choices":[{"text":"Variance","value":"A"},{"text":"Standard deviation","value":"B"},{"text":"Range","value":"C"},{"value":"D"},{"value":"E"}],"correctAnswer":1},{"id":240625,"question":"The extent of variation between two extreme observations of a data set is measured by:","choices":[{"text":"Average","value":"A"},{"text":"Range","value":"B"},{"text":"Quartiles","value":"C"},{"value":"D"},{"value":"E"}],"correctAnswer":2},{"id":240624,"question":"The measures that are used to determine the degree or extent of variation in a data set are called measures of:","choices":[{"text":"Dispersion","value":"A"},{"text":"Central tendency","value":"B"},{"text":"Average","value":"C"},{"value":"D"},{"value":"E"}],"correctAnswer":1},{"id":240623,"question":"The spread or scatterness of observations in a data set is called:","choices":[{"text":"Average","value":"A"},{"text":"Dispersion","value":"B"},{"text":"Central tendency","value":"C"},{"value":"D"},{"value":"E"}],"correctAnswer":2},{"id":240622,"question":"The observations that divide a data set into four equal parts are called:","choices":[{"text":"Deciles","value":"A"},{"text":"Quartlies","value":"B"},{"text":"Percentiles","value":"C"},{"value":"D"},{"value":"E"}],"correctAnswer":2},{"id":240621,"question":"The measure which determines the middle-most observation in a data set is called:","choices":[{"text":"Median","value":"A"},{"text":"Mode","value":"B"},{"text":"Mean","value":"C"},{"value":"D"},{"value":"E"}],"correctAnswer":1},{"id":240620,"question":"The most frequent occurring observation in a data set is called:","choices":[{"text":"Mode","value":"A"},{"text":"Median","value":"B"},{"text":"Harmonic mean","value":"C"},{"value":"D"},{"value":"E"}],"correctAnswer":1},{"id":240619,"question":"The n<sup>th</sup> positive root of the product of the x<sub>1</sub>,x<sub>2</sub>,x<sub>3</sub>..................x<sub>n</sub> observations is called:","choices":[{"text":"Mode","value":"A"},{"text":"Mean","value":"B"},{"text":"Geometric mean","value":"C"},{"value":"D"},{"value":"E"}],"correctAnswer":3},{"id":240617,"question":"Sum of the deviations of the variable \"X\" from its mean is always:","choices":[{"text":"Zero","value":"A"},{"text":"One","value":"B"},{"text":"Same","value":"C"},{"value":"D"},{"value":"E"}],"correctAnswer":1},{"id":240615,"question":"Mean is affected by change in;","choices":[{"text":"Place","value":"A"},{"text":"Scale","value":"B"},{"text":"Rate","value":"C"},{"value":"D"},{"value":"E"}],"correctAnswer":2},{"id":240613,"question":"Mean is affected by change in:","choices":[{"text":"Value","value":"A"},{"text":"Ratio","value":"B"},{"text":"Origin","value":"C"},{"value":"D"},{"value":"E"}],"correctAnswer":3},{"id":240612,"question":"Mean of a variable with similar observations any constant k is:","choices":[{"text":"Negative","value":"A"},{"text":"k itself","value":"B"},{"text":"Zero","value":"C"},{"value":"D"},{"value":"E"}],"correctAnswer":2},{"id":240611,"question":"A data in the form of frequency distribution is called:","choices":[{"text":"Grouped data","value":"A"},{"text":"Ungrouped data","value":"B"},{"text":"Histogram","value":"C"},{"value":"D"},{"value":"E"}],"correctAnswer":1},{"id":240610,"question":"A Deviation is defined as a difference of any value of the variable from a:","choices":[{"text":"Constant","value":"A"},{"text":"Histogram","value":"B"},{"text":"Sum","value":"C"},{"value":"D"},{"value":"E"}],"correctAnswer":1}]