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Daniel [21]
3 years ago
6

Jack and Jill are two students in Mrs.Juliano's math class.On the last five quizzes,Jack scored an 80,90,95,85, and 70. Jill sco

red a 70,75,90,100, and 95.
Find the median and interquartile range for each student.

Which student's quiz grades are more consistent?

Mathematics
1 answer:
larisa [96]3 years ago
6 0
Median = it is the middle value, which split the higher half from the lower half of the data

To find it order the data:

Jack: 70, 80, 85, 90, 95 => median = 85

Jill: 70, 75, 90, 95, 100 => median = 90

Interquartile range, IQR = Percentil 75th - Percentil 25th

Jack:

Percentil 75% = Q3

5 data * 75% = 3.75 => the next value (over the 3rd) is the 4th => Q3 = 90

Percentil 25% = Q1

5 data * 25% = 1.25 => the next value (over the first) is the 2nd => Q1 = 80

Interquartile range = Q3 - Q1 = 90 - 80 = 10

Jill:

Q3 = fourth value = 95
Q1 = second value = 75

IQR = Q3 - Q1 = 95 - 75 = 20

 


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Answer:

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Step-by-step explanation:

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3 years ago
Find the length of side x in simplest radical form with a rational denominator.
Mrrafil [7]

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Step-by-step explanation:

This is an isosceles triangle.  Thus, the side marked 'x' has the same length as the other leg (the horizontal leg):  6 units.

5 0
2 years ago
If you save one penny on January 1, two pennies on January 2, three pennies on January 3, and continue this pattern for one year
monitta
The given condition is an arithmetic sequence with the first term (a1) is 1 penny and the common difference (d) is 1 penny. A year that is not a leap year has 365 days (n). The arithmetic series (S) is calculated through formula,
 
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Substituting the known values,
 
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4 0
3 years ago
Please help meeeee!!!! Rewrite each number in exponential notation using 2 as the base: 8= 16= 32= 64= 128= 256=
Dennis_Churaev [7]

Step-by-step explanation:

a^n=\underbrace{a\cdot a\cdot a\cdot...\cdot a}_{n}

8=2\cdot2\cdot2=2^3\\\\16=2\cdot2\cdot2\cdot2=2^4\\\\32=2\cdot2\cdot2\cdot2\cdot2=2^5\\\\64=2\cdot2\cdot2\cdot2\cdot2\cdot2=2^6\\\\128=2\cdot2\cdot2\cdot2\cdot2\cdot2\cdot2=2^7\\\\256=2\cdot2\cdot2\cdot2\cdot2\cdot2\cdot2\cdot2=2^8

5 0
3 years ago
Read 2 more answers
A manufacturer produces safety jackets for competitive fencers. These jackets are rated by the minimum force, in newtons, that w
Bumek [7]

Answer:

0

Step-by-step explanation:

H0 : μ = 840

H1 : μ < 840

Sample size, n = 49

Standard deviation, s = 14

Test statistic = (xbar - μ) ÷ (s/√(n))

Test statistic = (830 - 840) ÷ (14/7)

Test statistic = - 10 / 2

Test statistic = - 5

The Pvalue ;

Pvalue = P(Z < - 5) = 0 (Z probability calculator)

The Pvalue = 0

7 0
3 years ago
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