New FLASH SALE Dhamaka - Flat 60% Off on All Courses

Practice Data Analytics Languages Questions and Answers

Which of the following is an example of moving average forecasting?
A data analyst is tasked with understanding customer churn for a subscription-based business. Which of the following steps should they prioritize immediate...
Which of the following best defines the role of a data analyst within an organization?
In defining KPIs for a marketing campaign, what is the most critical aspect a data analyst should ensure?
What is the most challenging step in the data analysis process and why?
Which technique best ensures that data storytelling is impactful for business stakeholders?
Which of the following is the most critical factor for implementing predictive analytics in the finance industry for risk modeling?
In healthcare, how can trend analysis most effectively enhance patient care?
Which of the following techniques is most effective for detecting fraud in online transactions?
What is the primary advantage of customer segmentation in marketing?
How does supply chain optimization benefit from predictive analytics?
Which of the following scenarios best exemplifies the use of semi-structured data in an organization?
What differentiates big data from traditional data in terms of its defining characteristics?
Which of the following is the most accurate example of metadata?
How does metadata contribute to effective data management in large-scale data systems?
What is a key distinction between metadata and primary data in a database context?
Which data collection method is best suited for obtaining real-time data from a third-party application?
What is the primary purpose of data cleaning in the data analysis process?
What is a common method to handle missing data in a dataset?
Which of the following is an effective method for handling inconsistent data in a merged dataset?
What is the key difference between SQL and NoSQL databases in terms of data storage?
Why is sampling an essential method in data analysis, especially when dealing with large datasets?
Which of the following is the main characteristic that differentiates random sampling from non-random sampling techniques?
Which sampling technique is most appropriate when the population is naturally divided into groups that differ significantly from each other?
Which of the following is the primary reason why bias occurs in sampling?
How is the optimal sample size determined in statistical analysis?
In Exploratory Data Analysis (EDA), which of the following is the primary purpose of using histograms?
Which of the following statements about the mean, median, and mode is true when applied to a dataset with a skewed distribution?
Which of the following is a key advantage of using box plots over histograms for visualizing data?
In hypothesis testing, a p-value of 0.03 indicates that:
Which of the following data visualization tools is specifically designed for creating interactive dashboards for business analytics?
A time series dataset shows monthly sales data for a retail store over the last three years. After performing decomposition, you observe that the residual ...
In time series analysis, the Dickey-Fuller test is used to:
Which of the following forecasting methods would be most suitable for a time series that exhibits both a long-term trend and seasonality?
If a time series exhibits a cyclical pattern that does not follow a fixed period (e.g., economic cycles), which of the following decomposition methods woul...
In time series forecasting, which of the following is true regarding the impact of autocorrelation on the model?
Which of the following is the most appropriate way to handle missing values when performing data analysis in Excel using a Pivot Table?
In SQL, which of the following is the correct syntax for joining three tables—customers, orders, and products—where orders and products share the colum...
In Python, which of the following functions in the Pandas library is used to merge two DataFrames df1 and df2 on a common column id?
Which of the following methods in the Seaborn library is used to create a scatter plot to visualize the relationship between two variables x and y?

More Topics

Today's Class

There is no live class for today.