Question
You have a dataset with sales data for multiple regions
and months. You want to calculate the total sales per region and then filter the regions with total sales greater than $1,000,000. Which of the following Excel features would be the most efficient way to achieve this?Solution
A Pivot Table is the most efficient way to aggregate, filter, and analyze large datasets in Excel. Pivot tables allow you to group data by categories (e.g., regions) and summarize it with calculations such as sums, averages, and counts. In this case, the Pivot Table allows you to calculate total sales per region and then filter out those with sales above $1,000,000. The Pivot Table provides an interactive and dynamic way to analyze data and is especially useful when working with large datasets. Why Other Options Are Wrong : A) VLOOKUP : VLOOKUP is used to find data in a table based on a matching value, but it is not designed for aggregating or summarizing data by groups (regions in this case). C) SUMIF : While SUMIF could sum sales based on a condition, it is less flexible for grouping data by regions and allows no easy way to filter the results. A Pivot Table is more powerful for summarization and filtering. D) COUNTIF : COUNTIF is used to count the number of occurrences that meet a condition, not for summing or aggregating sales data. E) Data Validation : Data Validation restricts data entry based on specified criteria but does not perform any aggregation or filtering operations on data.
If a dataset has a mean significantly higher than the median, which of the following is most likely true?
In Exploratory Data Analysis (EDA), which of the following is the primary purpose of using histograms?
A hospital uses a data-driven approach to improve patient care. They identify that patients with similar conditions respond differently to treatments b...
In Python, which method removes missing values?
Which of the following transformations is most appropriate to bring all feature values into the range [0,1] for a machine learning model?
...In exploratory data analysis (EDA), which of the following is the primary goal?
Which of the following synchronization techniques is used to resolve the Readers-Writers Problem efficiently?
A company divides its employees into departments (e.g., HR, IT, Marketing) and then selects random samples from each department for a satisfaction surve...
In Power BI, which feature allows the creation of dynamic and customized summaries of data by dragging and dropping fields into a table-like structure?
In artificial intelligence, what is the primary advantage of using a convolutional neural network (CNN) over a traditional multi-layer perceptron (MLP) ...
