Sentences with phrase «by averaging effect sizes»

Effect sizes (ES) were calculated using Cohen's d. For each study, overall effectiveness was calculated by averaging effect sizes...

Not exact matches

«On the floor in room corners, Large size Brilliant Pebbles reduces comb filter effects caused by very high sound pressure levels that develop in the corners when music is playing — as much as 3 or 4 times higher than the average sound pressure level in the room!!

The smell of vanilla increased blood flow by an average of 9 %.11 Yet, his sample size was small, and it's hard to say whether this effect was a result of the vanilla itself — or whether the home - baking scent of vanilla is simply one that many men associate with pleasant, affectionate, cuddly memories.

Learning gains are measured by comparing the average improvements in the test scores of pupils, represented by the statistical size of the effect.

In the partial group, which did the traffic light, peer checking activities, on average in that middle unit they improved by 0.3 grades, which was an effect size of 0.38.

Our results indicate that NCLB generated statistically significant increases in the average math performance of fourth graders (effect size 5 0.23 by 2007) as well as improvements at the lower and top percentiles.

Figure 1 contains a histogram, plotted by Mark Lipsey, showing the number of family therapy evaluations demonstrating various effect sizes.33 Although a number of evaluations found negative effects, the average for all is well above zero.

We inflated this sample size by a design effect of 1.18 to 210 infants per trial arm to allow for correlation between responses within the same cluster (that is, maternal and child health centre), 28 assuming an average cluster size of seven (the number of eligible mothers attending each centre) and an intracluster correlation coefficient of 0.03.

On average, ROE seems to achieve replicable immediate effects, as rated by teachers (mean absolute effect size [ES] =.25), larger effects than those reported in the most comprehensive meta - analysis to date regarding similar programs implemented as smaller - scale models or demonstrations (mean ES =.21) or in routine practice (mean ES =.10)(Wilson et al. 2003; Wilson and Lipsey 2007).

The larger average effect was produced by between 20 and 25 % of the programs that had effect sizes larger than.5 (which is considered to represent a moderate - to - large effect).