Quantitative Quiz 14MarkMarch 7, 2025Quantitative Aptitude Welcome to your Quantitative Quiz 14 If the average of three consecutive odd numbers is 15, find the smallest number. 13 14 15 16 None What is 60% of 80? 485 46 47 48 None The ratio of the ages of A and B is 2:3. If A is 24 years old, what is B's age? 35 36 37 38 None A number is increased by 20% and then decreased by 10%. What is the overall percentage change? 12% increase 10% increase 8% increase 9% increase None A salary increases from ₹5000 to ₹6000. What is the percentage increase? 15% 20% 25% 30% None If the ratio of boys to girls in a class is 3:5 and the total number of students is 40, how many boys are there? 15 16 17 18 None A shopkeeper buys a book for ₹200 and sells it for ₹250. Find the profit percentage. 40% 20% 25% 35% None A trader allows a 10% discount on an item and still makes a 20% profit. Find the marked price if the cost price is ₹500. ₹600 ₹625 ₹750 ₹700 None A product is sold for ₹800 after a 20% loss. Find the cost price. ₹1,000 ₹900 ₹1,050 ₹1,200 None If a product is sold at 15% profit after giving a 10% discount, find the cost price when the marked price is ₹2,000. ₹1,400 ₹1,600 ₹1,700 ₹1,500 None A shopkeeper sells an item at ₹1,200 after a 25% discount. Find the marked price. ₹1,500 ₹1,600 ₹1,750 ₹1,751 None A car travels at 60 km/hr. How long will it take to cover 240 km? 3 hours 4 hours 5 hours 6 hours None A person walking at 6 km/hr reaches his destination in 2.5 hours. Find the distance. 12 km 15 km 18 km 20 km None A train 150 meters long crosses a pole in 10 seconds. Find its speed. 15 m/s 20 m/s 25 m/s 30 m/s None Two trains moving in opposite directions at 80 km/hr and 120 km/hr cross each other in 6 seconds. Find the total length of both trains. 300 m 400 m 500 m 600 m None A boat covers 30 km downstream in 2 hours and returns upstream in 3 hours. Find the speed of the stream. 2 km/hr 3 km/hr 4 km/hr 5 km/hr None What is the mean of the data set {2, 4, 6, 8, 10}? 4 6 2 3 None Which of the following is a measure of dispersion? Standard deviation Mean Median Mode None The probability of an event occurring is always between: 0 and 10 -1 and 1 -∞ and +∞ 0 and 1 None If the correlation coefficient between two variables is -1, the relationship is: Perfect positive No relationship Weak positive Perfect negative None Which test is used to compare the means of two independent groups? ANOVA T-test Chi-square Z-test None What is the main purpose of regression analysis? To estimate the mean of a population To find the probability of an event To predict the value of a dependent variable based on independent variables To measure the spread of data None Which of the following is NOT a type of probability distribution? Normal distribution Median distribution Poisson distribution Uniform distribution None The central limit theorem states that as the sample size increases, the distribution of the sample mean approaches: A normal distribution A uniform distribution A binomial distribution A Poisson distribution None Which of the following is used to measure the spread of data around the mean? Mean Variance Median Mode None Which of the following is an example of a continuous random variable? Number of heads in a coin toss Number of students in a class Height of a person Number of cars in a parking lot None What is the p-value in hypothesis testing? Probability that the null hypothesis is true Probability of obtaining test results as extreme as the results actually observed Probability that the alternative hypothesis is true Probability of rejecting the null hypothesis None What is the main assumption of a parametric test? Data is randomly selected The data follows a known distribution (like normal distribution) Data is nominal Data is non-parametric None What does a confidence interval represent? A range of values within which the true population parameter is likely to lie The average of all sample statistics The probability of an event occurring A statistical test to reject the null hypothesis None Which of the following is an example of a non-parametric test? Z-test T-test Chi-square test ANOVA None 1 out of 6 Time's upTime is Up! Post Views: 130
