1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
siniylev [52]
3 years ago
5

Two students conduct a study to investigate the relationship between forearm length and height. Maria measures the subjects in c

entimeters. In a scatterplot of the data she sees a linear relationship between the variables, so she calculates the correlation coefficient. She determines that r = 0.86. John measures the same subjects in inches. He also calculates the correlation coefficient. What do you expect the correlation will be for John’s measurements?
Physics
1 answer:
inn [45]3 years ago
4 0

Answer:

r = 0.86

Explanation:

Correlation coefficients are the strength of the relationship between two variables.

Correlations can indicate anywhere between

  • 1 - for a strong positive relationship.
  • -1 - for a strong negative relationship.
  • 0 - for no relationship at all.

Looking at sample correlation coefficient formula which says

r_{xy} = S_{xy} ÷ (S_{x} × S_{y})

where S_{x} and S_{y} are the sample deviations and S_{xy} is the sample covariance, all of which will remain the same for Maria and John.

Hence, John's correlation will be approximately 0.86 since he would have approximately the same measurement as Maria's measurement when Maria's measurement is converted from centimeters to inches.

You might be interested in
Which of the following oceans lies between North America, South America, Europe and Africa?
kondaur [170]
A) Pacific Ocean <span>lies between North America, South America, Europe and Africa

In short, Your Answer would be Option A

Hope this helps!</span>
7 0
3 years ago
Read 2 more answers
The mass of the earth is 5.96/10kg^24. The radius of the earth is approximately 6.37x10^6 calculate the force of gravity
n200080 [17]
<h2>Answer:g=9.79ms^{-2},A object of mass m at the surface of earth experiences a force mg</h2>

Explanation:

Let M be the mass of earth.

Let R be the radius of earth.

Let G be the universal gravitational constant.

Given,

M=5.96\times 10^{24}Kg

R=6.37\times 10^{6}m

G=6.67259 \times 10^{-11}Nm^{2}Kg^{-2}

Let g be the acceleration due to gravity.

Then,g=\dfrac{GM}{R^{2}}

g=\frac{6.67259 \times 10^{-11}\times 5.96\times 10^{24}}{(6.37\times 10^{6})^{2}}

g=9.79ms^{-2}

A object of mass m at the surface of earth experiences a force mg

3 0
3 years ago
a stone is dropped from rest at an initial height h above the surface of the earth. Show that the speed with which it strikes th
Ksju [112]

Answer:

v=\sqrt{2gh}

Explanation:

We could use conversation of energy. Total distance the stone will cover will be

h=\frac{1}{2} g t^{2}

the Final velocity will be

v=gt\\v=g\sqrt{\frac{2h}{g} }\\ v=\sqrt{2gh}

5 0
3 years ago
All of the fallowing are possible sources of error in a scientific investigation exept for
Whitepunk [10]

c adding research resources during an investigation

6 0
3 years ago
Which person ha the most freedom to make his or her own lifestyle decisions?
alex41 [277]

Answer:

C Quincy

Explanation:

Both Frieda and Vladimir are too young to be making their own decisions. Lucinda has limited freedom due to having two children, while Quincy is just now becoming an adult and has his whole life still ahead of him. Therefore, Quincy has the most freedom to make their own lifestyle decisions.

I hope this helps!

3 0
3 years ago
Other questions:
  • What is the momentum of an object that is traveling at 3 m/s and has a mass of 5 kg?
    5·1 answer
  • The rectangular boat shown below has base dimensions 10.0 cm × 8.0 cm. Each cube has a mass of 40 g, and the liquid in the tank
    11·1 answer
  • Which errors might occur when measuring length of object​
    10·1 answer
  • A thin, uniform rod is hinged at its midpoint. to begin with, one-half of the rod is bent upward and is perpendicular to the oth
    14·2 answers
  • a train travels 81 kilometers in 2 hours and then 88 kilometers in 2 hours what is its average speed​
    5·1 answer
  • Keplers laws follow which law discovered by sir Isaac Newton
    6·2 answers
  • What is the first step for both loading and unloading a firearm?
    11·1 answer
  • A 0.0400-g positive charged ball with charge q = 6.40 μC is resting on a flat, frictionless horizontal surface. For a time of t
    15·1 answer
  • A 163 ‑turn circular coil of radius 2.65 cm and negligible resistance is immersed in a uniform magnetic field that is perpendicu
    5·1 answer
  • A load of 5.0N stretches a spring by 10cm the relaxed length is 40cm assuming that the proportional length is not exceeded deter
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!