User nicefella

48 votes

7 answers

18k views

Intuitive explanation of convergence in distribution and convergence in probability

asked Jan 23, 2015 at 19:38

13 votes

3 answers

26k views

Simple linear regression fit manually via matrix equations does not match lm() output

asked Feb 9, 2014 at 23:25

7 votes

1 answer

2k views

When is the inverse of the Fisher Information exact? (MLE)

asked Feb 24, 2014 at 3:18

6 votes

1 answer

3k views

Hypothesis testing with Neyman–Pearson (finding cutoff quantile of Poisson dist)

asked Mar 20, 2014 at 7:39

6 votes

1 answer

7k views

Distribution of test statistic under null and alternative

asked Jan 22, 2015 at 0:16

5 votes

1 answer

7k views

Show that the sample covariance converges in probability to the $Cov(X,Y)$

asked Jan 25, 2015 at 22:35

5 votes

1 answer

300 views

Show that $\widehat{\operatorname{Cov}(\hat{\mu},Z_i)}$ is always zero even $\operatorname{Cov}(\mu,Z_i)$ is not always $0$

asked Feb 2, 2015 at 19:24

4 votes

1 answer

260 views

Identifying $\beta_1$ with one instrumental variable and one exogenous variable

asked Feb 7, 2015 at 23:44

4 votes

2 answers

242 views

If $E[Y|X]=a$ for some constant $a\neq 0$, then does $cov(X,Y)=0$?

asked Jan 25, 2015 at 1:11

4 votes

1 answer

3k views

Finding an unbiased estimator with the smallest variance

asked Jan 12, 2015 at 4:46

4 votes

1 answer

56 views

Significance of $1$ in the model: $Y_i=1[B_0+B_1X_i\geq \epsilon_i]$ in Binary Choice Model?

asked Apr 14, 2015 at 22:50

3 votes

3 answers

454 views

Confused on the interpretation of regression coefficients

asked Feb 22, 2015 at 17:58

3 votes

0 answers

237 views

Asymptotic distribution of $\hat{B_1}$in simple linear regression

asked Feb 24, 2015 at 21:41

2 votes

1 answer

105 views

Algebraic manipulation of $Var(Y|X)=E[(Y-E(Y|X))^2|X]$

asked Jan 27, 2015 at 7:38

2 votes

1 answer

163 views

Show that $E[\mu_i^2|X_i]=\sigma^2$ and $Var(\mu_i|X_i)=\sigma^2$

asked Feb 2, 2015 at 18:47

2 votes

2 answers

199 views

Why is this test statistic standard normal? Simple question

asked Jan 22, 2015 at 2:23

1 vote

0 answers

85 views

Finding a Random Variable $X$ on the sample space with given cdf

asked Jan 12, 2015 at 19:22

1 vote

1 answer

4k views

Using R to calculate qt (t-dist) using qf(f dist) help?

asked Sep 26, 2014 at 17:08

1 vote

1 answer

75 views

How to find the levels (+ or -) using the words in a Fractional Factorial?

asked Dec 9, 2014 at 0:22

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19 Questions

Intuitive explanation of convergence in distribution and convergence in probability

Simple linear regression fit manually via matrix equations does not match lm() output

When is the inverse of the Fisher Information exact? (MLE)

Hypothesis testing with Neyman–Pearson (finding cutoff quantile of Poisson dist)

Distribution of test statistic under null and alternative

Show that the sample covariance converges in probability to the $Cov(X,Y)$

Show that $\widehat{\operatorname{Cov}(\hat{\mu},Z_i)}$ is always zero even $\operatorname{Cov}(\mu,Z_i)$ is not always $0$

Identifying $\beta_1$ with one instrumental variable and one exogenous variable

If $E[Y|X]=a$ for some constant $a\neq 0$, then does $cov(X,Y)=0$?

Finding an unbiased estimator with the smallest variance

Significance of $1$ in the model: $Y_i=1[B_0+B_1X_i\geq \epsilon_i]$ in Binary Choice Model?

Confused on the interpretation of regression coefficients

Asymptotic distribution of $\hat{B_1}$in simple linear regression

Algebraic manipulation of $Var(Y|X)=E[(Y-E(Y|X))^2|X]$

Show that $E[\mu_i^2|X_i]=\sigma^2$ and $Var(\mu_i|X_i)=\sigma^2$

Why is this test statistic standard normal? Simple question

Finding a Random Variable $X$ on the sample space with given cdf

Using R to calculate qt (t-dist) using qf(f dist) help?

How to find the levels (+ or -) using the words in a Fractional Factorial?