Question

O Quiz Ilms A researcher is trying to examine the effects of two different teaching methods. He divides 20 students into two groups of 10 each. For group 1, the teaching method is using fun examples. Where as for group 2 the teaching ci method is using software to help students learn. After a 20 minutes lecture of both groups, a test is conducted for all the students. We want to calculate if there is a significant difference in the scores of both the groups It is given that: Alpha=0.05. two tailed. • Mean test score for group 1 = 10 Mean test score for group 2 = 7 Standard error = 0.94 What is the value of t-statistic?​

Answer 1

Answer:    36.13

Step-by-step explanation:

The R2 number indicates the percent variability in scores. The R2 formula provided by

Given that there are two groups with sizes of 10, these degrees of freedom would be $10+10 -2.$ There are 18 levels of freedom.

$R2 = 36.13$

Describe variability.

• The degree to which the data points in a statistical distribution or data collection deviate from the average value and from one another is virtually by definition the measure of variability.
• This most frequently refers to the erratic nature of investment returns in financial terms.
• Professional investors place equal importance on knowing the unpredictability of investment returns as they do on understanding the value of the returns themselves.
• Investors believe that a high degree of return fluctuation entails a high level of risk.

KEY LESSONS

• In the statistical and financial fields, "variability" is used to describe how data deviates from its mean value.
• The term "variability" in finance most frequently refers to return variability.

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