Which of the following sampling methods is used for heterogeneous units of universe rather than the homogeneous units and can be adopted only when its population is known?

Which of the following statements is incorrect about sampling methods?

Consider the following list: squares_list = [2, 3. S. 2. 8. 9. 7. 6} In which of the following IR models of text mining, a document is represented by a set of key terms that is either chosen from a f‌ixed set of key terms or automatically from the documents?

Which of the following statements is NOT correct about pandas?

Which of the following fundamental measures used for assessing the quality of text retrieval represent(s) the percentage of retrieved documents relevant to a query?

Which of the following data mining algorithms is applied to a database containing a large number of transactions and also learns association rules?

Sam is popular for hitting a target in 6 out of 12 shots, whereas John can hit the same target in 8 out of 14 shots. What will be the probability that the target will be hit when they both try?

It is given that there are 15 pairs of readings on X and Y such that the coeff‌icient of correlation is 0.87. It is also given that the standard deviation on is 5.60. What will be the approximate standard error of estimate of Y on X?

Which of the following clustering algorithms is used for grid-based partitioning?

While calculating rank correlation coeff‌icient between sales and expenditure for a time period of12 years. the difference in rank for a year was mistakenly taken as 9 instead of 7 and as a result, the value Of rank correlation coefficient was calculated as 0.79. If the mistake is rectified, then what will be the approximate correct value of rank correlation coeff‌icient?

For a group of 12 students, the sum of squares of differences in their ranks for science and math is given as 60. On the basis of the given information. find the value of rank correlation coefficient.