Quantitative Aptitude(Technique) Quiz - 1

1. Which of the following is the binary equivalent of the decimal number 57?
[A]111000
[B]101001
[C]111001
[D]100111



2. How many different numbers can be formed by using six out of the nine digits 1, 2, 3, 4, 5, 6, 7, 8, 9?
[A]54
[B]84
[C]15120
[D]60480



3. The sum of the 20 terms of the series 3, 5, 7, 9, 11…. is
[A]440
[B]450
[C]460
[D]470



4. If a function is defined such as y = f(x) = 5 x + 4, then the inverse function can be denoted as
[A](y – 5) / 4
[B](y – 4) / 5
[C]5y + 4
[D]4y + 5



5. Which of the following is not correct about construction of bar charts?
[A]All bars should rise from the same base line
[B]The gaps between the bars should be uniform
[C]The bars should be arranged from the left to right
[D]Width of the bar should be proportional to the data represented



6. Which of the following is used to represent data in the form of pictures, where the size of the picture is proportional to the magnitude of the data?
[A]Bar chart
[B]Line chart
[C]Pictogram
[D]Pie chart



7. Which of the following is not true about median?
[A]Median is not strongly affected by the extreme values
[B]It can be also be calculated from grouped data
[C]It can also be calculated for qualitative data
[D]It can not be computed for grouped data having open-ended classes



8. For a given data set, the values of mode and median were found to be 50.25 and 65.50 respectively; then the mean of the data set is approximately equal to
[A]27.125
[B]57.875
[C]59.25
[D]73.125



9. If the quartiles, Q1 = 52.0 and Q3 = 65.0, then the coefficient of quartile deviation is equal to
[A]9
[B]0.11
[C]0.8
[D]1.25



10. Which of the following is not true about mean absolute deviation?
[A]Mean deviation is obtained by calculating the absolute deviations of each observation from mean
[B]Mean deviation is a more comprehensive measure compared to range
[C]It is conducive to further algebraic treatment
[D]It cannot be computed for distributions with open end classes



11. If the b coefficient for regression equation of Y on X is 0.75, and the b coefficient for regression equation of X on Y is 1.05, then the coefficient of correlation for the given data set is
[A]0.81
[B]0.83
[C]0.85
[D]0.89



12. If the points in a scatter diagram show a very little spread and a tendency to rise from the left to the right along the horizontal axis, then we can conclude that
[A]There is perfectly positive correlation
[B]There is perfectly negative correlation
[C]There is no correlation
[D]There is high degree of positive correlation



13. Which of the following is not correct about standard error of estimate?
[A]It measures the reliability of the estimating equation
[B]It is the measure of variation of the observed values around the regression line
[C]The smaller the value of the standard error of estimate, the farther are the observations from the regression line
[D]The larger the value of the standard error of estimate, the farther are the observations from the regression line



14. The value of the coefficient of correlation between two variables can take values in the range of
[A]0 and 1
[B]–1 and 1
[C]–1 and 0
[D]0 to ∞



15. The value index number measures the
[A]Changes in prices of a basket of commodities from one period to another
[B]Changes in quantities consumed of a basket of commodities over a period of time
[C]Change in the total monetary value of a basket of commodities over a period of time
[D]Change in the retail prices of various commodities