Question

Plzz solve these questions as fast as you can plzzz

Answer 1

Answer:

a=-3

Step-by-step explanation:

total observation =5

so mean formula

=sum of observation /no of observation

1=a+a+6+a+2+a+8+a+4/5

1=5a+20/5

1=5(a+4)/5

1=a+4

a=-3

Answer 2

Answer:Value of a is -3 and Median is 7

Step-by-step explanation:

Let the mean is X bar,

X bar = (a+a+6+a+2+a+8+a+4)/5=1

5a+20=5

5a=-15

a=-3

a=-3,a+6=3,a+2=-1,a+8=5 and a+4=-1

For median:

Arranging in ascending order,

-3,-1,-1,3,5

Since no. Of obs. Is 5(ODD),

Median = (n+1)/2 = 6/2 = 3rd obs.

3rd obs. = -1