Elementary Statistics
Mean, median, mode and range.
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పూర్తి మాక్ తీసుకోండి →Q1 · Elementary Statistics · EASY
The mean of five numbers is 24. If one number is excluded, the mean of the remaining four numbers becomes 22. What is the excluded number?
Q2 · Elementary Statistics · MEDIUM
The median of the following data set is 35: 22, 28, 31, x, 38, 42, 45. What is the value of x?
Q3 · Elementary Statistics · MEDIUM
The mode of the data set 12, 15, 18, 15, 20, 18, 15, 22, 18, 15 is 15. If two more observations are added to this data such that 18 becomes the mode, what is the minimum number of times 18 must appear in the new data set?
Q4 · Elementary Statistics · HARD
The mean of 20 observations is 45. It is found that an observation 53 was misread as 83. The range of the correct data is 60, and the smallest observation is 20. What is the median of the correct data if the data is symmetrically distributed?
Q5 · Elementary Statistics · EASY
The average of five numbers is 42. If one number is excluded, the average becomes 38. What is the excluded number?