robtodd4248 robtodd4248
  • 19-06-2017
  • Mathematics
contestada

The average score on an aptitude test is 80 with a standard deviation of 10. one person scored a 100. what is that person's z-score?

Respuesta :

mathmate
mathmate mathmate
  • 27-06-2017
Z-score for a variable X is calculated using
Z(x)=(x-mean)/standard deviation.
Here
mean=80
standard deviation=10
x=100
Z(100)=(100-80)/10=20/10=2
Answer Link

Otras preguntas

Who is Molière? could you help me out with this one?
What is the pair of vectors if summed , would create of equilibrium (a resultant of 0i + 0j) ?
X^2-5x-24=0 3x^2+x-4=0 Solve by factoring or using the quadratic formula
Jason is 5 years older than bill,and bill is twice as old as sharon.how old is jason ?whic expression represent the best way to solve the following problem? A.2
what are the functions of pharynx
what does 'every dog has its day' mean?
describe in your own words whatIs a Compound Noun?
2. Edna paid at least php. 1,200 for a pair of pants and a blouse. the cost of the pair of pants is php. 600 more than the cost of the blouse.
what are some commonly misused words?
what is dark poetry? thanks in advance