Verbal test scores and number of library books checked out for 15 eighth graders

Data for Exercise 9.30

Verbal

Format

A data frame/tibble with 15 observations on two variables

number

number of library books checked out

verbal

verbal test score

References

Kitchens, L. J. (2003) Basic Statistics and Data Analysis. Pacific Grove, CA: Brooks/Cole, a division of Thomson Learning.

Examples

plot(verbal ~ number, data = Verbal)
abline(lm(verbal ~ number, data = Verbal), col = "red")

summary(lm(verbal ~ number, data = Verbal))
#> 
#> Call:
#> lm(formula = verbal ~ number, data = Verbal)
#> 
#> Residuals:
#>     Min      1Q  Median      3Q     Max 
#> -16.261  -3.886   3.059   4.751   7.974 
#> 
#> Coefficients:
#>             Estimate Std. Error t value Pr(>|t|)    
#> (Intercept)  45.3464     4.0217  11.276 4.39e-08 ***
#> number        2.3828     0.2751   8.662 9.27e-07 ***
#> ---
#> Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1
#> 
#> Residual standard error: 6.695 on 13 degrees of freedom
#> Multiple R-squared:  0.8523,	Adjusted R-squared:  0.841 
#> F-statistic: 75.03 on 1 and 13 DF,  p-value: 9.265e-07
#>