Month: January 2022

Categories
Statistics

The location of the critical region depends upon:

► Null hypothesis
► Alternative hypothesis 
► Value of alpha
► Value of test-statistic

Categories
Statistics

If ŷ is the predicted value for a given x-value and b is the y-intercept then the equation of a regression line for an independent variable x and a dependent variable y is: STA301

► ŷ = mx + b, where m = slope 
► x = ŷ + mb, where m = slope
► ŷ = x/m + b, where m = slope
► ŷ = x + mb, where m = slope

Categories
Statistics

The Chi- Square distribution is continuous distribution ranging from: (STA301)

► -∞ ≤ χ2≤ ∞
► -∞ ≤χ2 ≤1
► -∞ ≤χ2 ≤0
► 0 ≤ χ2≤ ∞

Categories
Statistics

In chi-square test of independence the degrees of freedom are: (STA301)

► n – p
► n – p-1
► n – p- 2
► n – 2

Categories
Statistics

The F-distribution always ranges from: (STA301)

► 0 to 1
► 0 to -∞
► -∞ to +∞
► 0 to +∞

Categories
Statistics

In measures of relative dispersion unit of measurement is: (STA301)

► Changed
► Vanish
► Does not changed
► Dependent

Categories
Statistics

For a particular data the value of Pearson’s coefficient of skewness is greater then zero. What will be the shape of distribution? (STA301)

► Negatively skewed
► J-shaped
► Symmetrical
► Positively skewed

Categories
Ophthalmology

Keratoconus can be managed by the following, except:

a-Glasses.
b-Rigid contact lenses.
c-LASIK.
d-Intracorneal ring segments. C
e-Penetrating keratoplasty.

Categories
Ophthalmology

Typically, progressive keratoconus leads to the following, except:

a-Frequent change of glasses.
b-Progressive irregular astigmatism.
c-Progressive hypermetropia. 
d-Fleisher ring.
e-Vogt stria.

Categories
Ophthalmology

Pseudocornea is a term used to describe:

a-Keratectasia.
b-Keratoconus.
c-Keratomalacia.
d-Total anterior staphyloma.
e-Non of the above.