And finally, up to 50 to 70 of software development effort is spent on validation and debugging.

If a construct is, is truly valid and has strong, a lot of support for it, then it will demonstrate all of these different types of validity.

That gives you content validity. So that's real easy.

And the correct answer is 0.043.

And the way to see this in this diagram is this is the region that should test as positive.

So it's necessary to have both convergence, and divergence to establish, construct validity.

We assessed his potential with the BinetSimon Test.

The results of the test were negative.

We also administered the Rorschach and Drüss Fables.

Now let's look at the different forms of validity.

Appropriate?

Does the test consist of words that children should know?

With the foot dorsiflexed, the tibia and the fibula are squeezed together.

With the knee fixed, the foot is dorsiflexed and externally rotated.

Apply a compressive force on the calcaneus.

Stabilize the hind foot and rotate the midfoot.

Stabilize the scapula and with the thumb pointing down passively flex the arm.

With the knee extended push the patella into the trochlear groove of the femur.

Grasp the heel, extend, and bounce the leg, gently forcing hyperextension.

Flex the knee to ninety degrees, apply an axial force along the tibia, and rotate the tibia.

Check

Inspection?

Analyze.

Can I look at the fast?

normal, adequate, borderline, mildly.

What's fair?

Of course, in reality, we don't know whether a person suffers cancer, but we can run a test like a blood test.

Next perform a tinel's by tapping over the ulnar tunnel.

Provide resistance against external rotation.

So, my first test has a 20 chance of coming in positive.

The examiner grasps the thumb and places an axial force with grinding.

Next, perform a Tinel's by tapping over the ulnar tunnel.

Now, let's do one last modification and let's write this procedure assuming you observed a negative test result.

This test should be, correlated to a lesser degree with tests of spacial reasoning than it is, with a test of reading comprehension.

Let's assume the probability of the test coming out positive given that we don't have this cancer is 0.2.

A biopsy.

The BinetSimon.

It's the inspection team.

valid

25, Patty.

In our cancer example, we know that the prior probability of cancer is 0.01, which is the same as 1 .

And what's the same for P( C, Neg).

Specifically, the joint probabilities.

The probability of a positive test and having cancer.

So, take a moment to just verify those.