Although their formulas are similar, one difference between the z-score (z) and the t-statistic (t) is that ______.
a. only z-scores (not t-statistics) are part of a theoretical distribution
b. z-scores evaluate sample means whereas t-statistics evaluate individual scores
c. the numerator of the t-statistic formula (not the z-score) is the difference between a score and a mean
d. the denominator of the t-statistic formula estimates the variability of sample means rather than individual scores
d. the denominator of the t-statistic formula estimates the variability of sample means rather than individual scores
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Consider the following statistics: Test 1 Test 2 Test 3 Test 4 Mean 56.59 68.24 76.47 89.14 Standard Deviation 14.29 11.34 8.98 4.21 Which of the above tests would produce the widest distribution of scores?
a. Test 1 b. Test 2 c. Test 3 d. Test 4
Which statistical literacy activity below is appropriate for early elementary students?
a. How data can be categorized and displayed. b. How data can be collected and represented. c. How data can be represented in frequency tables and bar graphs. d. How data can be analyzed with measure of center.
About 42% of births in the United States today are cesarean section deliveries
Indicate whether this statement is true or false.
Parenting styles should change during adolescence, ideally becoming more ________ and less ________. A)
A) Authoritative; Permissive B) Authoritarian; Authoritative C) Authoritarian; Permissive D) Authoritative; Authoritarian