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Start learning 50% faster. Sign in nowIf a time series exhibits a cyclical pattern that does not follow a fixed period (e.g., economic cycles), which of the following decomposition methods w...
Why is Exploratory Data Analysis (EDA) considered a crucial step in the data analysis process?
In hypothesis testing, what does a p-value less than 0.05 typically indicate ?
A data analyst has generated insights on customer retention trends. To effectively communicate these insights, which of the following techniques would b...
In data cleaning, which technique is most effective in handling outliers in a dataset that could skew analysis?
What is the primary difference between Type 1 and Type 2 hypervisors?
A data analyst is working on a survey dataset that records customer feedback as "Very Satisfied," "Satisfied," "Neutral," "Dissatisfied," and "Very Diss...
In SQL, which type of join returns all records from the left table and the matched records from the right table, and fills in NULL values for non-matchi...
Which sampling technique involves dividing the population into mutually exclusive subgroups and then randomly selecting samples from each subgroup?
If a dataset has a strongly skewed distribution , which measure of central tendency is most appropriate to represent the data?
