Question

Find the mean, median and mode fo
a. 15, 19, 15, 14, 15, 16, 14, 21, 15​

Answer 1

Answer: 15 is the median as median is nothing else but the number which is in the middle.The mean is 15.6 as mean is the sum of all the numbers divided by the amount of numbers in the set. Mode is the number which appears most often in the set which is 15 is their thrice in the set.

Step-by-step explanation: Median

• 15,19,15,14,15,16,14,21,15
• 15 has 4 numbers on the left and 4 on right.
• Mean
• 15+19+15+14+15+16+14+21+15=141
• there are nine numbers which are getting added=141 divided by 9=15.6
• Mode 15 is most often in the grid

Answer 2

Answer:

$first \: of \: all \: arange \: in \: increasing \: order \\ 14 \: \: \: 14 \: \: \: 15 \: \: \: 15 \: \: \: 15 \: \: \: 15 \: \: \: 16 \: \: \: 19 \: \: \: 21 \\ now \: for \: mean \: we \: have \: = \frac{sum \: of \: all \: observations }{total \: no. \: \: of \: observations} \\ = \frac{14 + 14 + 15 + 15 + 15 + 15 + 16 + 19 + 21}{9} \\ = 16 \\ now \: for \: median \: we \: have \: ( \frac{n + 1}{2} )th \: term \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = (\frac{9 + 1}{2}) th \: term = 5th \: term \: \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 15 \\ now \: for \: mode \: we \: know \: maximum \: repeat \: of \: no. \: is \: \: mode \: which \: is \: 15$