Each student in a seventh grade physical education class did a one minute sit up test at the beginning of the six weeks period, and then did the same test again at the end of the six weeks period. The data is recorded in the dot plots below.
x xx
х
х
X
х
XX
х
х X

X
х
30
50
40
xx xxx
35
CART
40 45
Number of Sit Ups in One Minute
At Beginning of Six Weeks Period
60
45 50 55
Number of Sit Ups in One Minute
At End of Six Weeks Period
Based on the dot plot data, the mean number of sit ups at the beginning of the six weeks period is 40 sit ups per minute with a
mean absolute deviation of 7. The mean number of sit ups at the end of the six weeks period is 48 sit ups per minute with a
mean absolute deviation of
From the data, it can be concluded that the students' number of sit ups had more variability at the
of the six weeks
period.

number one is the correct answer

step-by-step explanation: dogs and cats are mentioned, no other animals

£56

step-by-step explanation:

u divide 24 by 3 and u get 8 so if u do 8 time 7 or 8+8+8+8+8+8+8 u get 56 and 56 divided by 7 is 8.

54 km / hours

step-by-step explanation:

we need to convert seconds to hours

60 seconds = 1 minutes

60 minutes = 1hour

15 m         60 second   60 minutes

  * *         = 54000 meters/ hour

second     1 minute             1 hour

now we need to convert meters to km

1000 m = 1 km

54000 m       1 km

*   = 54 km / hours

hour               1000m

step-by-step explanation:

one of the most important purposes of surface treatment is to alter surface properties according to the requirement of specific applications. for example, hydrophobic coating has been utilized on windshield and eyeglasses. gold atom monolayer on substrate has become a popular surface bioconjugation strategy.