diff --git a/tests/testthat/_snaps/discovr_bookexamples/estimate-slopes-discovr-1.svg b/tests/testthat/_snaps/discovr_bookexamples/estimate-slopes-discovr-1.svg
index b3163d513..adfbd7404 100644
--- a/tests/testthat/_snaps/discovr_bookexamples/estimate-slopes-discovr-1.svg
+++ b/tests/testthat/_snaps/discovr_bookexamples/estimate-slopes-discovr-1.svg
@@ -27,32 +27,32 @@
-
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--0.5
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diff --git a/tests/testthat/_snaps/estimate_contrasts.md b/tests/testthat/_snaps/estimate_contrasts.md
index 6920b192a..736383b01 100644
--- a/tests/testthat/_snaps/estimate_contrasts.md
+++ b/tests/testthat/_snaps/estimate_contrasts.md
@@ -324,7 +324,7 @@
----------------------------------------------------------
low | -0.06 | 0.01 | [-0.08, -0.05] | -7.08 | < .001
mid | -0.05 | 0.01 | [-0.06, -0.04] | -9.82 | < .001
- high | -0.05 | 0.01 | [-0.07, -0.03] | -4.51 | < .001
+ high | -0.05 | 0.01 | [-0.07, -0.03] | -4.53 | < .001
Marginal effects estimated for barthtot
Type of slope was dY/dX
@@ -340,7 +340,7 @@
Level1 | Level2 | Difference | SE | 95% CI | t(808) | p
--------------------------------------------------------------------
mid | low | 0.01 | 0.01 | [-0.01, 0.03] | 1.17 | 0.243
- high | low | 0.02 | 0.01 | [-0.01, 0.04] | 1.10 | 0.271
+ high | low | 0.02 | 0.01 | [-0.01, 0.04] | 1.10 | 0.270
high | mid | 0.00 | 0.01 | [-0.02, 0.03] | 0.27 | 0.786
Variable predicted: neg_c_7
@@ -367,7 +367,7 @@
mid, female | low, female | 0.02 | 0.01 | [ 0.00, 0.05] | 1.76 | 0.079
high, male | low, female | 0.00 | 0.02 | [-0.04, 0.05] | 0.12 | 0.908
high, female | low, female | 0.03 | 0.02 | [-0.01, 0.06] | 1.58 | 0.115
- mid, female | mid, male | 0.03 | 0.01 | [ 0.00, 0.05] | 2.24 | 0.026
+ mid, female | mid, male | 0.03 | 0.01 | [ 0.00, 0.05] | 2.23 | 0.026
high, male | mid, male | 0.00 | 0.02 | [-0.04, 0.05] | 0.18 | 0.859
high, female | mid, male | 0.03 | 0.02 | [ 0.00, 0.06] | 1.83 | 0.068
high, male | mid, female | -0.02 | 0.02 | [-0.06, 0.02] | -1.08 | 0.280
diff --git a/tests/testthat/_snaps/plot-slopes/plot-slopes-y-axis-labels-1.svg b/tests/testthat/_snaps/plot-slopes/plot-slopes-y-axis-labels-1.svg
index 8863cfe13..445973011 100644
--- a/tests/testthat/_snaps/plot-slopes/plot-slopes-y-axis-labels-1.svg
+++ b/tests/testthat/_snaps/plot-slopes/plot-slopes-y-axis-labels-1.svg
@@ -29,18 +29,18 @@
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diff --git a/tests/testthat/_snaps/plot-slopes/plot-slopes-y-axis-labels-2.svg b/tests/testthat/_snaps/plot-slopes/plot-slopes-y-axis-labels-2.svg
index 3fb5f49bb..69fd48e61 100644
--- a/tests/testthat/_snaps/plot-slopes/plot-slopes-y-axis-labels-2.svg
+++ b/tests/testthat/_snaps/plot-slopes/plot-slopes-y-axis-labels-2.svg
@@ -27,25 +27,25 @@
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--0.25
--0.20
--0.15
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diff --git a/tests/testthat/_snaps/plot/plot-jonhson-neyman-1.svg b/tests/testthat/_snaps/plot/plot-jonhson-neyman-1.svg
index b619a755a..157adcee8 100644
--- a/tests/testthat/_snaps/plot/plot-jonhson-neyman-1.svg
+++ b/tests/testthat/_snaps/plot/plot-jonhson-neyman-1.svg
@@ -29,18 +29,18 @@
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0.05
diff --git a/tests/testthat/_snaps/plot/plot-slopes-3.svg b/tests/testthat/_snaps/plot/plot-slopes-3.svg
index f54b96518..9adf9d759 100644
--- a/tests/testthat/_snaps/plot/plot-slopes-3.svg
+++ b/tests/testthat/_snaps/plot/plot-slopes-3.svg
@@ -27,24 +27,24 @@
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-0.00
-0.25
-0.50
-0.75
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+0.50
+0.75
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diff --git a/tests/testthat/_snaps/plot/plot-slopes-4.svg b/tests/testthat/_snaps/plot/plot-slopes-4.svg
index 38733308b..a0b3fe3fb 100644
--- a/tests/testthat/_snaps/plot/plot-slopes-4.svg
+++ b/tests/testthat/_snaps/plot/plot-slopes-4.svg
@@ -27,32 +27,32 @@
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diff --git a/tests/testthat/test-discovr_bookexamples.R b/tests/testthat/test-discovr_bookexamples.R
index 94485cc26..9c7ee8d45 100644
--- a/tests/testthat/test-discovr_bookexamples.R
+++ b/tests/testthat/test-discovr_bookexamples.R
@@ -109,7 +109,7 @@ test_that("modelbased, chapter 10.3", {
"caunts | Slope | SE | 95% CI | t(438) | p",
"-------------------------------------------------------",
"-9.62 | -0.09 | 0.10 | [-0.29, 0.10] | -0.91 | 0.361",
- "0.00 | 0.17 | 0.07 | [ 0.03, 0.30] | 2.48 | 0.014",
+ "0.00 | 0.17 | 0.07 | [ 0.04, 0.30] | 2.48 | 0.014",
"9.62 | 0.43 | 0.09 | [ 0.25, 0.61] | 4.64 | < .001",
"",
"Marginal effects estimated for vid_game",