Options in 3rd and 4th questions are wrong!. Hope it helps :)
Help me pls ive been waiting for an hour
1 answer:
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Answer:
at least 9 students in each cohort.
Step-by-step explanation:
Given that :
In a class, there are 25 students and each of them is either a sophomore, a freshman or a junior. We have to determine the number students in the same cohort.
Let us suppose there are equal number of students in each of the cohort.
Now let us assume that the number of the students in each cohort be 8, i.e. each as a freshman, a junior or a sophomore. Therefore, the total number in the all the cohorts will be 24 students only.
Thus, we can say that there are at least freshman, at least
sophomore or at least
junior in each of the cohort.
The question is incomplete, here is the complete question:
On May 3, 1999, 59 tornadoes hit a certain state in the largest tornado outbreak ever recorded for that state. Sixteen of these were classified as strong (F2 or F3) or violent (F4 or F5). Length of Path (miles) Intensity:
a. 7 F.
b. 9 F2.
c. 16 F3.
d. 11 F3.
e. 8 F2.
f. 9 F2.
g. 5 F2.
h. 16 F4.
i. 15 F3.
j. 38 F5.
k. 42 F4.
l. 3 F2.
m. 8 F2.
n. 1 F2.
o. 14 F3.
p. 23 F3.
Part (a) Make a box and whisker plot
Part (b) Identify outliners. Remove them and redraw the box and whisker diagram
Part (c) How does the removal of outliners effect box and whisker plot? How does is effect the median of the set?
Answer:
Given below with explanations
Step-by-step explanation:
(a)
The data is first arranged in ascending order:
1, 3, 5, 7, 8, 8, 9, 9, 11, 14, 15, 16, 16, 23, 38, 42
Total values = 16
Minimum value = 1
Maximum value = 42
Lower Quartile = 1/4 x 16 = 4th value = 7 (1, 3, 5, 7, 8, 8, 9, 9, 11, 14, 15, 16, 16, 23, 38, 42)
Upper Quartile = 3/4 x 16 = 12th value = 16 (1, 3, 5, 7, 8, 8, 9, 9, 11, 14, 15, 16, 16, 23, 38, 42)
Median = 1/2 x 16 = 8th value = 9 (1, 3, 5, 7, 8, 8, 9, 9, 11, 14, 15, 16, 16, 23, 38, 42)
The Box and whisker plot is attached in the picture below:
(b)
Outliners are 38 and 42
1, 3, 5, 7, 8, 8, 9, 9, 11, 14, 15, 16, 16, 23
Total values = 14
Minimum value = 1
Maximum value = 23
Lower Quartile = 1/4 x 14 = 3.5th value = 6 (1, 3, 5, 7, 8, 8, 9, 9, 11, 14, 15, 16, 16, 23)
(5+7)/2
Upper Quartile = 3/4 x 14 = 10.5th value = 14.5 (1, 3, 5, 7, 8, 8, 9, 9, 11, 14, 15, 16, 16, 23)
(14+15)/2
Median = 1/2 x 14 = 7th value = 9 (1, 3, 5, 7, 8, 8, 9, 9, 11, 14, 15, 16, 16, 23)
The Box and whisker plot is attached in the picture below:
(c)
The lower and upper quartile values have changed after removing the outliners but the median remains same in this case
