Angel015
contestada

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 scored a 70,75,90,100, and 95.

Find the median and interquartile range for each student.

Which student's quiz grades are more consistent?

Jack and Jill are two students in MrsJulianos math classOn the last five quizzesJack scored an 80909585 and 70 Jill scored a 707590100 and 95 Find the median an class=

Respuesta :

Edufirst
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

 


Otras preguntas