Form Four students taught statistical reasoning with Fathom outperformed control-group students on posttest statistical reasoning scores after controlling for pretest¶

Claim · All claims
Evidence · 1 study (2 entries) · causal r2 · q2 · i3 large
Currency · newest study 2018 · checked against its sources 2026-11-01 (automated, 2 of 2 entries) · not reviewed by a person

Subclaims¶

Reading the evidence codes

q is the design tier, i the impact, n the sample, and the kind with its r the rigour judged within that kind: what each code means.

This claim: no standardized effect is recorded in observations/ for it yet, so no benchmark reading is possible.

q2 i3 After controlling pretest, the experimental (Fathom) group showed a statistically significant difference in posttest Statistical Reasoning Assessment scores compared with the control group, with a large effect size. → Nanteni Ganesan & Leong Kwan Eu 2018 q2 i? The adjusted posttest mean of the experimental group (21.28) was higher than that of the control group (14.325). → Nanteni Ganesan & Leong Kwan Eu 2018 (2)

Evidence¶

Nanteni Ganesan & Leong Kwan Eu 2018¶

Nanteni Ganesan & Leong Kwan Eu. (2018). Effectiveness of Fathom on Statistical Reasoning among Form Four Students. Malaysian Online Journal of Educational Sciences, 6(4). https://eric.ed.gov/?id=EJ1192963

q2 · i3 · causal · r2

Quasi-experimental non-equivalent pretest-posttest study of 72 Form Four students (experimental n=34 with Fathom, control n=38 without), analysed with one-way ANCOVA. The article reports "F (1,69) =28.94, p< .005" with "partial 𝜂2 = .93" and observed power = 1.

"The results revealed that there is a statistically significant difference in the mean of the posttest score in Statistical Reasoning assessment between control and experimental group after controlling pre-test, F (1,69) =28.94, p< .005, with a large effect size (partial 𝜂2 = .93)."

Nanteni Ganesan & Leong Kwan Eu 2018 (2)¶

q2 · i? · causal · r2

Descriptive ANCOVA-adjusted posttest means for the same 72-student quasi-experiment, covariate evaluated at Pretest = 12.63. The experimental group's adjusted mean (21.28) exceeded the control group's (14.325); no effect size is printed for this descriptive comparison.

"The adjusted means of posttest score of statistical reasoning for control were 14.325 ( SE = .886, 95% CI [12.56, 16.09]) and experimental group were 21.28 ( SE = .937, 95% CI [19.41, 23.15]) respectively"

Discussion¶

Learner Variables¶

Statistical Reasoning — outcome: instruction changes it

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