13. The mode is the number or group of numbers (set) that appear most frequently in the data
It belongs to many many subsets including: {sqrt(13)}, The set of square roots of integers The set of square roots of primes The set of square roots of numbers between 12 and 27 {3, -9, sqrt(13)} The set of irrational numbers The set of real numbers
27 and 55 are composite numbers but 13 is a prime number
the mode is 13 because it appears the most times. um... well that's it.
The set of prime numbers or any subset of it.
The mean is the average: (2+15+21+27+31+42+55) divided by the number of terms (7). The mean is 193/7 = 27.6 The median is the number from the set which is in the middle, when listed lowest to highest, which you have already done. With your odd numbered set of 7 values, three numbers will be below the median, and three numbers above. The median is 27. If you had an even-numbered set, the median would be half-way between the two middle values of the set. In your example, there is no mode. The mode in a set of data is the value that occurs most often. No element in your set occurs more than once, and so there is no mode.
(10, 12, 13, 17, 17, 18, 27) The median is 17. The mode is 17. The range is 17.
If the seven numbers are the only possible outcomes then there is no mode. Otherwise each one of the seven is a mode since they appear more often than the numbers that do not appear at all.
They are 13 and 19
The numbers 13 and 29 are prime - the one composite number in that list is 27.
27
To any set that contains it! It belongs to {27}, or {45, sqrt(2), 27, pi, -3/7}, or all whole numbers between 23 and 53, or multiples of 3, or composite numbers, or counting numbers, or integers, or perfect cubes, or rational numbers, or real numbers, or complex numbers, etc.