The mode is the number that most often occurs. As both 19 and 22 occur three times, then there is no mode.
Its 17
The median is 19.
The median of {10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20] is the 6th values which is 15.
The answer is 20C4 = 20*19*18*17/(4*3*2*1) = 4845
The variance of this data set is 22.611
The mode is 16.
13
All of the numbers appear once and as a mode is the most commonly occurring number, there is no mode.
17
Mean: 16 Median: 17 Mode: 13 Range: 6
17, 19, 23
They are 15, 16, 17, 18 & 19.
All of the numbers appear once and as a mode is the most commonly occurring number, there is no mode.
Hourly
No number appears more than once, so there is no mode.
17, 19, 23
17, 19, 23.