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Table 7 Standardized coefficients from the linear and ridge regression models on reading speed progress and associated t- and p-values.

From: Both sides of the story: comparing student-level data on reading performance from administrative registers to application generated data from a reading app

Model Variable Coefficient t p
Linear regression reading ability test score −0.942 −2.362 0.018
grade −0.638 −1.384 0.167
genre of book: non-fiction −22.180 −3.519 0.000
last reading speed relative to class 8.460 9.759 0.000
reading speed progress relative to class −20.050 −12.670 0.000
Ridge regression reading ability test score −1.222 −3.034 0.002
genre of book: fiction 4.285 2.252 0.025
grade −1.267 −2.435 0.015
last reading speed 0.044 3.208 0.001
last reading speed relative to class 5.510 4.089 0.000
reading speed progress −0.302 −12.794 0.000
  1. Note: Statistics based on reading data from August 2019 to February 2020, reading ability data and register data.