A scientist collected data in 10 trials comparing tired students' and awake students' test scores.

Trial Tired Average

Score

1 34%

2 56%

3 60%

58%

Awake Average

Score

67%

88%

90%

86%

Which trial was the least precise and is unlikely to be reproducible?

O

O

O

O

Trial 1

Trial 2

Trial 3

Trial 4

Scores of trial 2,3 are more accurate while trail 1 is the least precise as well as un-reproducible.

Explanation:

The given second value is very close to the first one since Score 1 is 34%, 64%. We calculate average such as 34+67 / 2 = 50.5 Deviations from the given values are calculated as follow: 50.5-34 = 16.5 & 50.5-67 = - 16.5 Now, the average of deviation will be = (16.5 + - 16.5) / 2 = 0.00 Calculating Score 2 by the given values: 56%,88% We calculate average such as 56+88 / 2 = 72 Deviations from the given values are calculated as follow: 72-56 = 16, 72-88 = - 16 Average deviations here is 0.00 Calculating Score 3 by the given values: 60%,90% We can similarly find the Average as such 60+90 / 2 = 75 Deviations from this is 75-60 = 15, 75-90 = - 15 Average deviations here 0.00 The given Score 4 is 58%, 86 % and its average is 72 and its deviation is - 14 while its average deviation is 0 Result: Trail 1 has high deviation hence its is less accurate.

Answer:21

Explanation:9+10