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The average of 6 observations is 45.5. If one new observation is added to the previous observations, then the new average becomes 47. The new observation is :
For even number of observations of a data distribution, what is the median? rank on the ascending order of observations b) (n/2) rank on the ascending order of observations c) Average of (n/2)th observation and (n/2 + 1)th observation d) Average of and (n/2) rank on the ascending order of observations
The median for an odd number of observations is _________ where n is the number of observations. rank on the ascending order of observations b) rank on the ascending order of observations c) Average of and (n/2) rank on the ascending order of observations d) (n/2) rank on the ascending order of observations
Questions below followed by three quantities. Find the relationship between them. Quantity I: In a class with a certain number of students if a teacher weighing 78 kg is added, then average weight of class is increased by 2 kg. If one more teacher weighing 66 kg is added, then the average weight of the class increases by 3.5 kg over the original average. What is the original average weight (in kg) of the class? Quantity II: The average age of 16 students and their teacher's age is 16 years. If the teacher's age is excluded, the average reduces by 2. What is the teacher's age? Quantity III: Average weight of three friends A, B and C is 46 kg. Another person D joins the group and now the average is 45 kg. If another person E whose weight is 6 kg more than D, joins the group replacing A, then average weight of B, C, D and E becomes 47 kg. What is the weight of A (in kg)?
Given below are three quantities named 1, 2 and 3. Based on the given information, you have to determine the relationship between the three quantities. You should use the given data and knowledge of Mathematics to choose between the possible answer. Quantity 1: A and B are competing in a game called, "Get a six". The first one who gets a six on throwing a dice wins. If A starts, what is the probability of B's winning. Quantity 2: When 1 is added to the numerator of a fraction, the fraction becomes 150% of the previous number. If three is added to denominator, the number becomes 1/4. Find the number. Quantity 3: Increase in average weight of group. Average of 12 people is 12.6 kg, 2 people are added to the group. Average weight of new people is 15.3 kg.
The average of 12 observations is 15. If 2 observations are deleted, then the average of the rest observations is 12. What is the average value of deleted two observations? 
How does number of observations influence overfitting? Choose the correct answer(s).Note: Rest all parameters are same
1. In case of fewer observations, it is easy to overfit the data.
2. In case of fewer observations, it is hard to overfit the data.
3. In case of more observations, it is easy to overfit the data.
4. In case of more observations, it is hard to overfit the data.
The average of n observations is 40. If one observation of value 80 is added, then the average of all the observations is 41. What is the value of n?
The average of 15 observations is 29. if the average of first 8 observations is 27 and that of last 8 observations is 31. the what will be the 8th observation? 
The average of n observations is 40. If one observation of value 80 is added, then the average of all the observation is 41. What is the value of n?