Question

Using the data below, perform descriptive statistics analyses (mean, standard deviation, variance) for scores before and after the vocabulary unit. Then, determine if there is a significant difference between the two sets of exam scores by performing a paired t test. Lastly, write a paragraph to convey the findings, using APA format.

Vocabulary - Beginning of Unit:24,18,61,43,39,65,57,54,21,18,46,54,14,34,50,38,44,20,35,19, and 36

Vocabulary - End of Unit: 55,64,67,59,60,71,60,73,47,67,55,78,48,66,60,63,84,58,73,61 and 65

Answer 1

For beginning of :

mean=37.62

standard daviation=15.77

variance=248.69

For end of unit :

mean=63.52

standard daviation=9.09

variance=82.62

we have to test hypothesis,

H₀=There is no significant difference between the two sets of exam scores.

H₁=There is a significant difference between the two sets of exam scores.

for paired t-test, by using MINITAB

T-Value = -8.55

and P-Value = 0.000

=0.05

here, p-value<. Hence, Reject H₀.

therefore, There is a significant difference between the two sets of exam scores.