Statics - Concepts Builder

Statics is the study of methods for quantifying the forces between bodies. Forces are responsible for maintaining balance and causing motion of bodies, or changes in their shape.

STA301 Latest Quiz 3

Let's Start!

Ops Times End!

Created on August 01, 2022 By

Tayyaba Bibi

STA301 Latest Quiz 3

STA301 Quiz 3 01-08-22

1 / 13

In measures of relative dispersion unit of measurement is:

Changed

Vanish

Changed

Does not changed

2 / 13

In measures of relative dispersion unit of measurement is:

Changed

Vanish

Changed

3 / 13

The F-distribution always ranges from:

0 to +∞

-∞ to +∞

0 to -∞

0 to 1

4 / 13

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

n – 2

n - p- 2

n - p-1

n - p

5 / 13

The Chi- Square distribution is continuous distribution ranging from:

0 ≤ χ2≤ ∞

-∞ ≤χ2 ≤0

-∞ ≤χ2 ≤1

-∞ ≤ χ2≤ ∞

6 / 13

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:

ŷ = x + mb, where m = slope

ŷ = x/m + b, where m = slope

x = ŷ + mb, where m = slope

ŷ = mx + b, where m = slope

7 / 13

The location of the critical region depends upon:

Null hypothesis

Value of alpha

Alternative hypothesis

Value of test-statistic

8 / 13

The t-Distribution is……………. Spread out then the standard normal Distribution.

Not

Equally

Less

9 / 13

To find the confidence internal for the ratio of two variances we use:

T-Distribution

Chi-Square Distribution

Z-Distribution

F-Distribution

10 / 13

How many percent of values are less then 4th deciles in a symmetric distribution.

11 / 13

The combined distribution of more than two random variables is:

Bivariate Distribution

Marginal Distribution

Joint Distribution

Univariate Distribution

12 / 13

The degrees of freedom for a T-test with sample size 14 is:

13 / 13

Which of the falling is true for the binomial distribution b(x: n, p):

Mean = Standard Deviation

Mean = Variance

Mean < Variance

Mean > Variance

Your score is

The average score is 35%

LinkedIn Facebook VKontakte

STA 630 Midterm Quiz

Let's Start!

Ops Times End!

Created on July 03, 2022 By

Tayyaba Bibi

STA630 Midterm Quiz

STA630 Midterm Quiz 03-07-22

1 / 13

Why do you need to review the existing literature?

To give your dissertation a proper academic appearance, with lots of references

Because without it, you could never reach the required word-count

To help in your general studying

To find out what is already known about your area of interest

2 / 13

Quantitative researcher's preoccupation with generalization is an attempt to:

Develop the law like findings of the natural sciences.

Boost their chances of publication.

Enhance the internal validity of their research.

Demonstrate the complex techniques of statistical analysis

3 / 13

Which of the following is not a feature of theoretical framework?

Making an inventory of propositions

Presenting findings

Specify the direction of relationship

Making an inventory of variables

4 / 13

n ______________ we collect same type of information from different respondents in different

times.

Case studies

Panel study

Time series Research

Cohort study

5 / 13

Which of the following is a discrete variable?

Age

Nationality

Test score

Income

6 / 13

______________ we collect same type of information from different respondents in different

times.

Cohort study

Time series Research

Panel study

Case studies

7 / 13

Null hypothesis states:

The direction of relationship

Existence of relationship

Absence of relationship

Casual relationship

8 / 13

Basic and Applied Research are the classifications of research on the basis of

Use of the research

Techniques used

Time dimension

Purpose of the research

9 / 13

What is a cross-sectional research?

A study of one particular section of society

A comparison of two or more variables over a long period of time

The collection of data from more than one case at one moment in time

One that is conducted when environment is uncertain

10 / 13

What is the variable called that a researcher manipulates in an experiment?

Dependent variable

Extraneous variable

Independent variable

None of the given options

11 / 13

Which of the following is Not a part of research design?

Data collection technique

Tool of data collection

Objectives of the study

Data processing and analysis

12 / 13

The elaboration of the variables in the theoretical framework addresses which type of questions?

Why we expect certain relationships to exist

How we expect certain relationships to exist

Both of the given questions

None of the given questions

13 / 13

What is the first step in the research process?

Define broad problem area

Theoretical framework

Problem definition

Preliminary data collection

Your score is

The average score is 0%

LinkedIn Facebook VKontakte

STA301 Midterm Quiz

Let's Start1

Ops Times End!

Created on July 01, 2022 By

Tayyaba Bibi

STA301 Midterm Quiz

STA301 Midterm Quiz 01-07_22

1 / 12

Which of the following is a characteristic of the normal distribution:

It is leptokurtic

It is not asymptotic

It is bell-shaped

It is a skewed distribution

2 / 12

The value of x² can never be

Negative

Greater than 1

Less than 1

Zero

3 / 12

3) What factor determines the shape of the t-distribution?

Probability

Frequency of data

Critical value

Degree of freedom

4 / 12

4) If a significance level of 5% is used rather than 1%, the null hypothesis is:

More likely to be rejected

Just as likely to be rejected

Less likely to be rejected

None of the given

5 / 12

5) β is the probability of

Reject H0/H0 is false

Accept H0/H0 is true

Reject H0/H0 is true

Accept H0/H0 is false

6 / 12

6) In how many ways, a team of 11 players can be chosen from a total of 16 players?

2680

5400

2426

4368

7 / 12

Hypergeometric probability distribution has

(N, n, k) parameter

(N, n, N − k) parameter

(N) parameter

8 / 12

8) Which one is the measure of central tendency:

Dispersion of the distribution

Scatterness of the distribution

Average of the distribution

Variation of the distribution

9 / 12

If P(X=x)=0, then f(x) is a ________ probability function.

Discrete

Continuous

Bivariate

Univariate

10 / 12

10) Suppose that a sample space S consists of four simple events: A, B, C, and D. That is S = {A, B, C, D}. If P(A) = .4, P(B) = .3, P© = .2, what is P(D)?

0.1

0.9

0.2

None of the given

11 / 12

11)

Which scale of measurementis more suitable in the following example?
The number of response given in a specified time period.

Nominal Scale

Ratio Scale

Interval Scale

Ordinal Scale

12 / 12

12) The parameter of the chi-square distribution is ________.

v − p

v − 2

v − 1

Your score is

The average score is 57%

LinkedIn Facebook VKontakte