Question

1. Find the mean median and mode of the data set.

4, 10, 3, 1

2. Alisha babysat her next door neighbor's children on Thursday nights. The amount of money she made for four weeks is listed below.

$25, $25, $22, $30

Alisha babysat another week and made $15. How were the mean and median affected?
A. The mean and median both decreased.

B. The mean and median both increased.

C. The mean decreased and the median stayed the same.

D. The mean and median both remained the same.

Answer 1

I think it C because the mean and median were originally 25 as median and 10.2 as mean and when the $15 were added the median was still 25 but the 10.2 was changed to a 11.7

Answer 2

1. mean) 4+10+3+1=18 18÷4=4.5 median) 1x,3,4,10x 3+4=7 7+1=8 8÷2=4 mode) there is no mode in the list as no values are repeated

2. mean before) 25+25+22+30=102 102÷4=25.5 mean after) 25+25+22+30+15=117 117÷4=29.25 median before) 22x,25,25,30x 25+25=50 50÷2=25 median after) 15x,22x,25,25x,30x

none of them. the mean increased and the median stayed the same.

I have underlined all my answers so it is easier for you to find them.