Final answer:
Jamal has a slightly higher average test score of 89.5 compared to Natalia's 89. However, Natalia has the most consistent test scores, with a range of 6 against Jamal's range of 10.
Step-by-step explanation:
To determine who has the greater test average between Jamal and Natalia, we need to calculate the mean (average) of their test scores. Jamal's test scores are 84, 88, 92, and 94. Natalia's test scores are 86, 88, 90, and 92. We calculate their means as follows:
Jamal: (84 + 88 + 92 + 94) / 4 = 358 / 4 = 89.5
Natalia: (86 + 88 + 90 + 92) / 4 = 356 / 4 = 89
Jamal's average is 89.5, while Natalia's average is 89. Therefore, Jamal has the greater test average.
To identify who has the most consistent test scores, we can look at the range or standard deviation of their test scores. In this case, we will use the range, which is the difference between the highest and lowest scores:
Jamal's range: 94 - 84 = 10
Natalia's range: 92 - 86 = 6
Natalia's range of 6 is smaller than Jamal's range of 10, suggesting that Natalia has more consistent test scores.