MCQOPTIONS
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MCQOPTIONS
This section includes 594 Mcqs, each offering curated multiple-choice questions to sharpen your SSC CGL knowledge and support exam preparation. Choose a topic below to get started.
| 201. |
The measure of dispersion which uses only two observations is called___________- |
| A. | Mean |
| B. | Median |
| C. | Range |
| D. | Coefficient of variation |
| Answer» D. Coefficient of variation | |
| 202. |
The data which have already been collected by someone are called_____________ |
| A. | Raw data |
| B. | Array data |
| C. | Secondary data |
| D. | Fictitious data |
| Answer» D. Fictitious data | |
| 203. |
If the distribution is symmetric about mean then the skewness is_____________. |
| A. | 1 |
| B. | Positive |
| C. | negative |
| D. | none |
| Answer» B. Positive | |
| 204. |
The sum of values divided by their number is called__________ |
| A. | Median |
| B. | Harmonic Mean |
| C. | Mean |
| D. | Mode |
| Answer» D. Mode | |
| 205. |
Calculate Standard deviation for the following sample data 2,4,6,8,10 and 12. Is________ |
| A. | 4.42 |
| B. | 2.42 |
| C. | 3.42 |
| D. | 5.42 |
| Answer» D. 5.42 | |
| 206. |
Larger values of r 2 (R2 ) imply that the observations are more closely grouped about the __________ |
| A. | average value of the independent variables |
| B. | average value of the dependent variable |
| C. | least squares line |
| D. | origin |
| Answer» D. origin | |
| 207. |
What is the average of 3%, 7%, 10%, and 16% ?____________ |
| A. | 8% |
| B. | 9% |
| C. | 10% |
| D. | 11% |
| Answer» C. 10% | |
| 208. |
The data are the same as for question 4 above. The relationship between number of beers consumed (x) and blood alcohol content (y) was studied in 16 male college students by using least squares regression. The following regression equation was obtained from this study: != -0.0127 + 0.0180x Suppose that the legal limit to drive is a blood alcohol content of 0.08. If Ricky consumed 5 beers the model would predict that he would be____________ |
| A. | 0.09 above the legal limit |
| B. | 0.0027 below the legal limit |
| C. | 0.0027 above the legal limit |
| D. | 0.0733 above the legal limit |
| Answer» C. 0.0027 above the legal limit | |
| 209. |
Assume the same variables as in question 28 above; height is measured in feet and weight is measured in pounds. Now, suppose that the units of both variables are converted to metric (meters and kilograms). The impact on the slope is__________ |
| A. | the sign of the slope will change |
| B. | the magnitude of the slope will change |
| C. | both a and b are correct |
| D. | neither a nor b are correct |
| Answer» B. the magnitude of the slope will change | |
| 210. |
Statistic is a numerical quantity, which is calculated from_____________ |
| A. | Population |
| B. | Sample |
| C. | Data |
| D. | Observations |
| Answer» C. Data | |
| 211. |
To find the average speed of a journey which is the appropriate measure of central tendency____________ |
| A. | Mean |
| B. | Geometric Mean |
| C. | Harmonic Mean |
| D. | Weighted Mean |
| Answer» D. Weighted Mean | |
| 212. |
Which of the following describe the middle part of a group of numbers?_____________ |
| A. | The Measure of Variability |
| B. | The Measure of Central Tendency |
| C. | The Measure of Association |
| D. | The Measure of Shape |
| Answer» C. The Measure of Association | |
| 213. |
A scatter diagram is________ |
| A. | A statistical test |
| B. | Linear |
| C. | Curvilinear |
| D. | A graph showing x and y values |
| Answer» E. | |
| 214. |
Suppose that you have carried out a regression analysis where the total variance in the response is 133452 and the correlation coefficient was 0.85. The residual sums of squares is____________ |
| A. | 37032.92 |
| B. | 20017.8 |
| C. | 113434.2 |
| D. | 96419.07 |
| Answer» C. 113434.2 | |
| 215. |
Suppose the correlation coefficient between height (as measured in feet) versus weight (as measured in pounds) is 0.40. What is the correlation coefficient of height measured in inches versus weight measured in ounces? [12 inches = one foot; 16 ounces = one pound] _______ |
| A. | 0.40 |
| B. | 0.30 |
| C. | 0.533 |
| D. | cannot be determined from information given e. none of these |
| Answer» B. 0.30 | |
| 216. |
The number of accidents in a city during 2010 is___________ |
| A. | Discrete variable |
| B. | Continuous variable |
| C. | Qualitative variable |
| D. | Constant |
| Answer» C. Qualitative variable | |
| 217. |
If the difference of the third and first quartile is divided by the sum of the third and first quartile then it isknown as__________ |
| A. | Quartile |
| B. | Coefficient of mean deviation |
| C. | Coefficient of quartile deviation |
| D. | None of the above |
| Answer» D. None of the above | |
| 218. |
Which of the following Measure of averages is affected by extreme (very small or very large) values in thedata set?____________ |
| A. | Geometric Mean |
| B. | Median |
| C. | Arithmetic Mean |
| D. | Harmonic Mean |
| Answer» D. Harmonic Mean | |
| 219. |
A method used to examine inflation rate anticipation, unemployment rate and capacity utilisation to produceproducts is classified as________ |
| A. | Data Exporting Technique |
| B. | Data Importing Technique |
| C. | Forecasting Technique |
| D. | Data Supplying Technique |
| Answer» D. Data Supplying Technique | |
| 220. |
In statistics, a sample means______________ |
| A. | A portion of the sample |
| B. | A portion of the population |
| C. | All the items under investigation |
| D. | None of the above |
| Answer» C. All the items under investigation | |
| 221. |
The average of squared deviations from mean is called_____________ |
| A. | Mean deviation |
| B. | Variance |
| C. | Standard deviation |
| D. | Coefficient of variation |
| Answer» C. Standard deviation | |
| 222. |
If there are many extreme scores on all examination, the dispersion is____________ |
| A. | Large |
| B. | Small |
| C. | Normal |
| D. | Symmetric |
| Answer» B. Small | |
| 223. |
Sum of deviations will be zero if it is taken from___________ |
| A. | Mean |
| B. | Mode |
| C. | Median |
| D. | Standard Deviation |
| Answer» B. Mode | |
| 224. |
The mean of 10 numbers is 9, then the sum (total) of these numbers will be________ |
| A. | 9 |
| B. | 0.9 |
| C. | 70 |
| D. | 90 |
| Answer» E. | |
| 225. |
The algebraic sum of deviations from mean is__________ |
| A. | Maximum |
| B. | Zero |
| C. | Minimum |
| D. | Undefined |
| Answer» C. Minimum | |
| 226. |
In quality control of manufactured items, the most common measure of dispersion is___________ |
| A. | Range |
| B. | Average deviation |
| C. | Standard deviation |
| D. | Quartile deviation |
| Answer» B. Average deviation | |
| 227. |
Which of the following is most likely to be an inverse relationship?__________ |
| A. | Between income and expenditure on education |
| B. | Between price increase and demand for a certain product |
| C. | Between average number of hours studied per day and the performance of the students in the examination |
| D. | Between advertising expenditure and sales of a product. |
| Answer» C. Between average number of hours studied per day and the performance of the students in the examination | |
| 228. |
Sum of dots when two dice are rolled is___________ |
| A. | A discrete variable |
| B. | A continuous variable |
| C. | A constant |
| D. | A qualitative variable |
| Answer» D. A qualitative variable | |
| 229. |
If there is a very strong correlation between two variables then the correlation coefficient must be _______ |
| A. | any value larger than 1 |
| B. | much smaller than 0, if the correlation is negative |
| C. | much larger than 0, regardless of whether the correlation is negative or positive |
| D. | None of these alternatives is correct. |
| Answer» C. much larger than 0, regardless of whether the correlation is negative or positive | |
| 230. |
When a multiple correlation coefficient r 1.2=1, then it shows __________ |
| A. | Reasonably good relationship |
| B. | Lack of linear relationship |
| C. | Perfect relationship |
| D. | None of these |
| Answer» D. None of these | |
| 231. |
If the correlation coefficient is a positive value, then the slope of the regression line ___________ |
| A. | must also be positive |
| B. | can be either negative or positive |
| C. | can be zero |
| D. | can not be zero |
| Answer» E. | |
| 232. |
The first hand and unorganized form of data is called____________ |
| A. | Secondary data |
| B. | Organized data |
| C. | Primary data |
| D. | None of these |
| Answer» D. None of these | |
| 233. |
The mean, mode, and median of the data set: 5, 4, 10, 12, 1, 5, 3, 7, 15, and 8 is respectively___________ |
| A. | 5, 6, 7 |
| B. | 7, 6, 5 |
| C. | 6, 5, 7 |
| D. | 7, 5, 6 |
| Answer» E. | |
| 234. |
If there are ten values each equal to 10, then standard deviation of these values is___________ |
| A. | 100 |
| B. | 20 |
| C. | 10 |
| Answer» D. | |
| 235. |
Data collected by NADRA to issue computerized identity cards (CICs) are__________ |
| A. | Unofficial data |
| B. | Qualitative data |
| C. | Secondary data |
| D. | Primary data |
| Answer» C. Secondary data | |
| 236. |
If the correlation coefficient is 0.8, the percentage of variation in the response variable explained by thevariation in the explanatory variable is____________ |
| A. | 0.80% |
| B. | 80% |
| C. | 0.64% |
| D. | 64% |
| Answer» C. 0.64% | |
| 237. |
Life of a T.V picture tube is a__________ |
| A. | Discrete variable |
| B. | Continuous variable |
| C. | Qualitative variable |
| D. | Constant |
| Answer» C. Qualitative variable | |
| 238. |
Which measure of dispersion can be computed in case of openend classes?___________ |
| A. | Standard deviation |
| B. | Range |
| C. | Quartile deviation |
| D. | Coefficient of variation |
| Answer» D. Coefficient of variation | |
| 239. |
Which branch of statistics deals with the techniques that are used to organize, summarize, and present thedata__________ |
| A. | Advanced Statistics |
| B. | Probability Statistics |
| C. | Inferential Statistics |
| D. | Descriptive Statistics |
| Answer» D. Descriptive Statistics | |
| 240. |
Regression modeling is a statistical framework for developing a mathematical equation that describes how __________ |
| A. | one explanatory and one or more response variables are related |
| B. | several explanatory and several response variables response are related |
| C. | one response and one or more explanatory variables are related |
| D. | All of these are correct. |
| Answer» D. All of these are correct. | |
| 241. |
The measures used to calculate the variation present among the observations relative to their average iscalled_______ |
| A. | Coefficient of kurtosis |
| B. | Absolute measures of dispersion |
| C. | Quartile deviation |
| D. | Relative measures of dispersion |
| Answer» E. | |
| 242. |
In a symmetrical distribution, mean is ____________ mode |
| A. | Equal to |
| B. | Less than |
| C. | Greater than |
| D. | Not equal to |
| Answer» B. Less than | |
| 243. |
In the case of an algebraic model for a straight line, if a value for the x variable is specified, then________ |
| A. | the exact value of the response variable can be computed |
| B. | the computed response to the independent value will always give a minimal residual |
| C. | the computed value of y will always be the best estimate of the mean response |
| D. | none of these alternatives is correct. |
| Answer» B. the computed response to the independent value will always give a minimal residual | |
| 244. |
The sum of squares of the deviations is minimum, when deviations are taken from__________ |
| A. | Mean |
| B. | Mode |
| C. | Median |
| D. | Zero |
| Answer» D. Zero | |
| 245. |
Regression analysis was applied to return rates of sparrowhawk colonies. Regression analysis was used to study the relationship between return rate (x: % of birds that return to the colony in a given year) and immigration rate (y: % of new adults that join the colony per year). The following regression equation was obtained) ! = 31.9 – 0.34x Based on the above estimated regression equation, if the return rate were to decrease by 10% the rate of immigration to the colony would________________ |
| A. | increase by 34% |
| B. | increase by 3.4% |
| C. | decrease by 0.34% |
| D. | decrease by 3.4% |
| Answer» C. decrease by 0.34% | |
| 246. |
Which of the following is the highest range of r?__________ |
| A. | 0 and 1 |
| B. | -1 and 0 |
| C. | -1 and 1 |
| D. | None of these |
| Answer» D. None of these | |
| 247. |
The grouped data is also called_________ |
| A. | Raw data |
| B. | Primary data |
| C. | Secondary data |
| D. | Qualitative data |
| Answer» E. | |
| 248. |
The number of accidents in a city during 2010 is__________ |
| A. | Discrete variable |
| B. | Continuous variable |
| C. | Qualitative variable |
| D. | Constant |
| Answer» C. Qualitative variable | |
| 249. |
Data in the Population Census Report is___________ |
| A. | Grouped data |
| B. | Ungrouped data |
| C. | Secondary data |
| D. | Primary data |
| Answer» D. Primary data | |
| 250. |
When data are collected in a statistical study for only a portion or subset of all elements of interest we areusing___________ |
| A. | A sample |
| B. | A Parameter |
| C. | A Population |
| D. | Both b and c |
| Answer» B. A Parameter | |