Question
A train traveling at 54 km/h takes 25 seconds to pass a
pole. Calculate the time it would take for the train to cross a platform, given that the ratio of the train's length to the platform's length is 5:2.Solution
ATQ, ATQ, S = D/t 54 × 5/18 = D/25 D = 15 × 25 = 375 Length of the train = 375 m Length of the platform = 375/5 × 2 = 150 m Time taken by train to cross the platform = (375 + 150)/(54 × 5/18) = 525/15 = 35 seconds Alternate solution: Time taken by train to cross the platform = 25 × (5 + 2)/5 = 35 seconds
An e-commerce company wants to understand the trend of holiday season sales over the past decade to forecast future sales. Which analysis method should ...
Which data modeling technique is used to represent the relationships between entities in a database?
Which sampling technique involves dividing the population into mutually exclusive subgroups and then randomly selecting samples from each subgroup?
In the context of data analysis, which of the following best describes trend analysis?
Which of the following R functions is used to perform a t-test for comparing the means of two independent samples?
What will be the output of the following C code?
#include < stdio.h >
void main ( ) {
  int x = 10, y = 20, *p1 = &x, *p2 = &y;...
Which of the following features in Power BI allows for dynamically filtering data across multiple visuals with a single control element?
In a structured database, which data storage format would best support hierarchical data with varying levels of nested attributes?
A data analyst is working on a survey dataset that records customer feedback as "Very Satisfied," "Satisfied," "Neutral," "Dissatisfied," and "Very Diss...
Why is sampling commonly used in data analysis, especially when dealing with large datasets?
Relevant for Exams:
