Question
If a tank can be filled by a tap in 12 hours, but due to
an outlet, it actually takes 6 hours longer to fill the tank, find the duration in which the outlet alone would empty the tank?Solution
Let tap ‘A’ fill the tank and tap ‘B’ empty the tank. Taking LCM of 12 and 18 = 36 Efficiency of A = 3 Efficiency of (A – B) = 2 Efficiency of B = 3 – 2 = 1 Tap B will empty the tank = 36/1 = 36 So, tap B will empty the tank in 36 hours.
Which of the following best describes a method to handle inconsistent data when integrating datasets from different sources?
A dataset contains "USA," "United States," and "U.S." as country entries. What is the best way to resolve these inconsistencies?
A study estimates the average weight of a population with a 95% confidence interval of (65 kg, 75 kg). What does this mean?
Which sampling technique is best suited for dividing a population into distinct subgroups and ensuring each subgroup is proportionally represented?
Which type of data visualization is most useful for identifying the relationship between two continuous variables?
Which of the following is a characteristic of a relational database management system (RDBMS) that distinguishes it from other database systems?
In data transformation, what is the primary purpose of standardization?
A company notices an increase in sales every December due to holiday shopping. Which component of time series data does this represent?
What is the primary advantage of using the ARIMA (AutoRegressive Integrated Moving Average) model for forecasting time series data?
In the context of metadata for data management, which of the following examples best illustrates descriptive metadata?
Relevant for Exams:
