Statıstıcs II (ENG)
Ünite Sınavı Soruları
- 20 soru
- Soru metinleri açık; şıklar ve cevap anahtarı uygulamada
- 1
Which of the following represents the sum of the explained variation and unexplained variation?
- 2
Which of the followings is the process of creating a model of the linear relationship between independent variable and dependent variable ?
- 3
A teacher wants to investigate whether there is a relationship between students' self-efficay and their exam results. 10 students were randomly picked up and their values were recorded and given in the table above. What is the Pearson correlation coefficient between students' self-efficacy scores and their achievement?
- 4
Which of the following represents the amount of variability in the dependent variable that cannot be explained by the linear relationship between independent and dependent variables?
- 5"The correlation analysis_____" Which of the following best completes the sentence above?
- 6
Y=5-2.4X
According to the given simple linear regression model, which of the following statement is false?
- 7
Y=a + bX
What does b indicates on that regression model?
- 8
Which of the followings looks at the relationship between variables and examines the degree of the relationship if there is any?
- 9
Which of the following is not true about the simple linear regression model
- 10
In which of the following models the constant of simple linear regression α is represented by β0?
- 11
Which of the followings measures the proportion of the variance of dependent variable (y), given by independent variable (x), when y is expressed as a linear regression on x in correlation and regression problems?
- 12
If the correlation coefficient is 0.50 which one of the following is true?
- 13
In a relationship examination between two variables, if the Pearson's coefficient is find as 0.90, which of the following expresses this value?
- 14
If the independent variable explains the 48% of the variability of the dependent variable, what might be the correlation coefficient between this independent and dependent variables?
- 15
If the SSE in multiple regression model is 150, k=5, and n=50, then what is MSE?
- 16
- It shows the degree of the relationship between two continuous variables
- It uses the ρ (rho) symbols.
- It gets values between -1 and +1.
Which of the following represents these expressions?
- 17
In which of the followings all pairwise values of the two continuous variables are plotted in two dimensions?
- 18
Which of the following interpretations is true if the negative value is-0.2 ≥ r > 0.4 in the interpretation of Pearson’s Correlation Coefficient?
- 19
What is the interpretation of Pearson’s Correlation Coefficient values "0 < r < 0.2"?
- 20
If the SSR in multiple regression model is 125 and k=5, then what is MSR?