The data below represents the number of practices each member of Nidhi's ski team attended.
1 answer:
Answer:
BOX plot B
Step-by-step explanation:
Given the data:
25 , 28 , 29 , 29 , 30 , 34 , 35 , 35 , 37 , 38
In other to know which box plot correctly summarizes the data, we have to obtain the 5 - number summary statistics for the data :
Minimum = 25 (least value in dataset)
Lower quartile, Q1 = 1/4(n+1)th term = 1/4(11)th term = 2.75 th term = 29
Median, Q2 = 1/2(n+1)th term = 1/2(11)th term = (30 + 34) / 2 = 32
Upper quartile, Q3 = 3/4(n+1)th term = 3/4(11)th term = 8.25 th term = 35
Maximum value = 38 (highest value in dataset).
Hence, boxplot B correctly summarizes the data.
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Answer:
Step-by-step explanation:
Tiffany's distance is defined by the equation,
d = 2.5t
Here, d = distance of Tiffany from the starting line
t = time
a). d = 2.5t
Tiffany's rate = 2.5 yards per second
b). Since, slope of a line passing through two points and
is given by,
Slope =
Therefore, slope of the line passing through two points (0, 10) and (10, 35)
=
= 2.5 yards per second
Dion's walking rate = 2.5 yards per second
Equation that defines the distance of Dione,
d = mt + b
Here, m = rate of the walking by Dione
b = y-intercept
Hence, equation will be,
d = 2.5t + 10
c). If d = 60 yards
For Tiffany,
d = 2.5t
60 = 2.5t
t = 24 seconds
For Dion,
d = 2.5t + 10
60 = 2.5t + 10
2.5t = 50
t = 20 seconds
Therefore, Dion will take less time and finish first.