Mathematics
There are 50 numbers. Each number is subtracted from 53 and the mean of the numbers so obtained is found to be -3.5. The mean of the given numbers is :
49.5
53
46.5
56.5
Related Questions
A government agency collected the data of individual incomes of 10,625 people and decided that the individual that have less income than the median of the data are economically poor. Assuming that all the individuals have different incomes, which of the following is correct?
The number of economically poor people is less than the number of rich people.
The number of economically poor people is more than the number of rich people.
Exactly half of the people are economically poor.
We can't say anything about the number of economically poor people.
There are 10 observations x1, x2, x3, ….., x10 in a data. The first five elements x1, x2, ….., x5 are placed by x1 + 5, x2 + 5, ….., x5 + 5 respectively. Also, the next five elements x6, x7, ….., x10 are placed by x6 - 5, x7 - 5, …, x10 - 5 respectively. Calculate the overall change in the mean of the data.
In a collection of data, there are 5 numbers and the numbers in the data are 3, 4, 12 and 13. If the median is 12, then what can be maximum value of mean of the data?