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144(1/2) × 14 – 28 = 7 × ? 12 × 14 – 28 = 7 × ? 168 – 28 = 7 × ? 140 = 7 × ? ? = (140 ÷ 7) ? = 20
In R, which function is used to perform a t-test for comparing the means of two independent samples?
Which of the following best explains why sampling is used in data analysis?
What is a common method to handle missing data in a dataset?
Which of the following sampling techniques is most suitable when the population is divided into distinct subgroups, and it is important to ensure each s...
Which SDLC model integrates testing at every phase of development, ensuring defects are identified early?
Which of the following SQL operations is used to combine data from two or more tables based on a related column?
Which sampling technique is best suited for dividing a population into distinct subgroups and ensuring each subgroup is proportionally represented?
Which of the following visualizations is most effective for detecting outliers in a dataset ?
What is the primary risk associated with bias in sampling, and how can it be minimized?
What is the primary purpose of data cleaning in the data analysis process?
