Ryan decides to record the amount of time that he sleeps at night for five nights. The table shows the data. Night Amount of Time Slept
1 6 hours and 20 minutes
2 5 hours and 50 minutes
3 7 hours and 5 minutes
4 6 hours and 47 minutes
5 7 hours and 18 minutes

What is the average amount of time that Ryan slept for those five nights?

A.
6 hours and 48 minutes
B.
6 hours and 40 minutes
C.
6 hours and 56 minutes
D.
6 hours and 32 minutes
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The correct answer is  B. 6 hours and 40 minutes

Explanation:

The average of a group of values refers to the middle or "average" value of these. This mathematical factor can be calculated by adding all the values, in this case you need to dd the time Ryan slept each night, and then divide the total into the 5 nights.  Below, you can find the process.

1. First add all the hours

6 + 5 + 7 +  6 + 7= 31 hours

2. Add the minutes

20 + 50 +  5 + 47 +18 = 140 minutes

3. Divide the result of the minutes into 60 to convert part of these minutes to hours.

140 / 60 = 2.3333 - There are 2 hours in the total of minutes and 20 minutes (0.3333 x 60 minutes = 20 minutes)

4. Total of hours = 31 + 2 = 33 hours

   Total of minutes = 20 minutes

5. Divide the total into 5 days

33 hours 20 minutes = 5 days

33 / 5 = 6.6 hours that represent 6 hours and 36 minutes (0.6 x 60 = 36 minutes)

20 minutes / 5 days = 4 minutes

Total: 6 hours and 40 minutes (36 minutes + 4 minutes)

the results from a pre-test for students for the year 2000 and the year 2010 are illustrated in the box plot. what do these results tell us about how students performed on the 29 question pre-test for the two years?

if we compare only the lowest and highest scores between the two years, we might conclude that the students in 2010 did better than the students in 2010. this conclusion seems to follow since the lowest score of 8 in 2010 is greater in value than the lowest score of 6 in 2000. also, the highest score of 28 in 2010 is greater in value than the highest score of 27 in 2000.

but the box portion of the illustration gives us more detailed information. the middle bar in each box shows us that the median score of 20 in 2000 is greater in value than the median score of 17 in 2010. further, we note that the box and whiskers divide the illustration into four pieces. each of these four pieces represents the same portion of students. so, the upper half of the students in 2000 scored in the same score range as the upper one-fourth of the students in 2010, see the illustration at a score of 20.

by considering the upper one-fourth, upper half, and upper three-fourths instead of just the lowest and highest scores, we would conclude that the students as a whole did much better in 2000 than in 2010. we would conclude that as a whole the students in 2010 are less prepared than the students in 2000.

in this section, we discuss box-and-whisker plots and the five key values used in constructing a box-and-whisker plot. the key values are called a five-number summary, which consists of the minimum, first quartile, median, third quartile, and maximum.

step-by-step explanation:

where did you get them? if you picked from the grass, is is probably poisonous.

step-by-step explanation: