Olivia enjoys watching little birds at the many feeders in her yard. she counts how many of them she can see in her yard every morning before she leaves for school. her data for two weeks can be seen below. day sun mon tue wed thu fri sat week 1 31 36 24 34 45 27 41 week 2 16 34 20 18 25 38 31 what is the mean of the number of little birds that olivia sees in her yard each morning? round to the nearest bird, if necessary. a. 34 b. 31 c. 30 d. 26

The correct answer is C. 30

Step-by-step explanation:

It is C-30, because if you add up all the data for week one you get,

31+36+24+34+45+27+41=

You get 238.

So, then you would divide by 7 because there are 7 days.

Then you have 34.

You would then do the same with Week 2.

And get, 26.

Finally you would add the two numbers,

34+26

And get, 60...

60 divided by 2 is 30.

Therefore the answer is C. 30.

C). 30

Step-by-step explanation:

First we arrange the data in ascending order

Week 1= 24,27,31,34,36,41,45

Week 2= 16, 18,20,25,31,34,38

To calculate for the mean

Let's find the mean of first week separate, the mean if second week separate, then add it up and divide by two.

Let's call first week1 mean "mean 1"

Let's call first week2 mean "mean 2"

Mean 1 = (24+27+31+34+36+41+45)/7

= 338/7

= 34

Mean 2= (16+18+20+25+31+34+38)/7

= 182/7

= 26

Total mean =( 34+26)/2

= 60/2

=30

If you want to decrease something by 30%, you multiply the number then subtract the result from the original number. However, you can subtract 30% from 100% then convert to a decimal to get a single multiplier.

100% - 30% = 70%

70% = 0.7

So, 0.7 is the answer.