Statics by Usman CB May 28, 2022 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 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 foran 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 More 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. 14 24 4 40 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: 14 13 7 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 isThe average score is 35% LinkedIn Facebook Twitter VKontakte 0% Restart quiz STA 630 Midterm Quiz 0 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 differenttimes. 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 differenttimes. 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 isThe average score is 0% LinkedIn Facebook Twitter VKontakte 0% Restart quiz STA301 Midterm Quiz 6 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 1) 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 2) The value of x^{2} 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 7) 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 9) 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 v Your score isThe average score is 57% LinkedIn Facebook Twitter VKontakte 0% Restart quiz Share FacebookTwitterPinterestEmail