Slopes

The standard error of the slope

The width of the confidence interval

The number of confidence intervals constructed

The percentage of confidence intervals that would contain the true value

Judgemental sampling

Simple random sampling (SRS)

Quota sampling

Snowball sampling

Confidence level

Margin of error

Probability value

Sampling variability

There is not enough evidence to conclude that there is a significant relationship.

The variability in the data does not affect the slope estimate.

There is conclusive evidence of a strong positive relationship.

Zero falls outside the range of plausible values for the population slope.

Purposive sampling

Non-probability sampling

Voluntary response sampling

Convenience sampling

b^3

b^2

(b-1)

b

By determining if 0 is contained in the interval

By computing the R-squared value

By finding the p-value

By comparing the slope to the mean value

The most likely outcome is that there is no statistically significant linear trend since the interval includes 0.

There could be either positive or negative linear trend but no more than 5 nor less than -1 unit change in response variable per unit change in X-variable.

This indicates a strong positive trend with predicted increase of exactly five units in Y-response to every additional X-unit.

The slope is too small to note any practical significance hence no need to consider it in statistical modeling.

The estimate is perfectly accurate

The estimate is moderately precise

The estimate is not precise

The estimate is very precise

At least one population slope differs significantly from zero but we cannot know which without further analysis or information.

Overlapping intervals indicate similar population parameters; non-overlap implies both are significant by themselves.

Both slopes are statistically significantly different from each other at an alpha level less than .05 since they do not overlap.

Neither slopes differ significantly from each other or from zero since they were calculated independently.