# Interpreting Geographical Data

Year one statistics exam

- Summation sign
- Rounding
- Central tendency
- Variability
- Boxplots
- Standard deviations
- Normal distribution
- Sampling
- Reliability and standard errors
- Confidence intervals and t-distribution
- Colomn, charts and tables
- Hypothesis testing and one sample t-test
- Two sample t-test
- F-test
- Anova I
- Anova II

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- Created by: Sophie
- Created on: 04-01-15 13:38

## Other questions in this quiz

## 2. Which is not a primary observation of the Central Limit Theory?

- The standard error of the sampling distribution of the mean is much bigger than the population
- Shape of sampling distribution of mean is normal
- The mean of the sample distribution of mean, the average sample mean goes towards the true population mean
- The standard deviation of the sampling distribution of the mean is much smaller than the standard deviation of the population

## 3. Which is not a feature of the F statistic graph?

- The right-skew in the F-distribution remains, even for very large samples. Both the t and normal distributions are symmetrical.
- F-TEST compares two variances to see whether one is significantly bigger than the other
- F distribution is bounded at 0, with all F-values having to be positive. Both Z and t can be either positive or negative, and the normal and t distributions go to infinity in both directions, this is only true
- When both d.f. values are small it is very right-skewed. When both are large it looks a bit like the normal distribution. When one is small and the other large you get intermediate forms.
- F Test compares two means to see whether one is significantly different that the other
- The shape of the curve is defined by the degrees of freedom. The F distribution takes two d.f. values

## 4. What is the definition of a critical value?

- A value that distinguishes significant from non significant differences at a specified level of confidence
- A value that distinguishes from the two non significant values
- A value that distinguishes from the two significant values

## 5. What is the dummy variable?

- The value that is used to represent the sum of the equation
- It is shown by the subscript of j next to the sigma sign but not in the rest of the equation.
- It is shown in the equation, in front of each variable
- The value that is shown before the equation

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