Math Deviations

A standardized test for determining entry to the placement in the math program at a school has an average score of 230 with a standard deviation of 25. The scale is as follows

at or below two deviations: intervention track

at or below one deviation: remedial track

within one standard deviation: normal track

at or above one deviation: advanced track

at or above two deviations: gifted track

If Josh scored a 200, what track would he be placed on?

• intervention

• remedial

• normal

• advanced

• gifted

A standardized test for determining entry to the placement in the math program at a school has an average score of 230 with a standard deviation of 25. The scale is as follows

at or below two deviations: intervention track

at or below one deviation: remedial track

within one standard deviation: normal track

at or above one deviation: advanced track

at or above two deviations: gifted track

If Raul scored a 275, what track would he be placed on?

• intervention

• remedial

• normal

• advanced

• gifted

A standardized test for determining entry to the placement in the math program at a school has an average score of 230 with a standard deviation of 25. The scale is as follows at or below two deviations: intervention track at or below one deviation: remedial track within one standard deviation: normal track at or above one deviation: advanced track at or above two deviations: gifted track What is the minimum z score needed to be in the gifted track?

• 280

• 2

• 255

• -2

A standardized test for determining entry to the placement in the math program at a school has an average score of 230 with a standard deviation of 25. The scale is as follows at or below two deviations: intervention track at or below one deviation: remedial track within one standard deviation: normal track at or above one deviation: advanced track at or above two deviations: gifted track What is the maximum score to be in the remedial track?

• -1

• 205

• 1

• 255

Approximately ​ (a)   of the data lies within 2 standard deviations of the mean.​

• 95%

• 50%

• 99.7%

• 68%

What is the second step (3) when calculating the Mean Absolute Deviation?

• Find the distance each value is from the mean

  (subtract)

• Find the mean of the distances

• Find the mean of the data

A standardized test for determining entry to the placement in the math program at a school has an average score of 230 with a standard deviation of 25. The scale is as follows at or below two deviations: intervention track at or below one deviation: remedial track within one standard deviation: normal track at or above one deviation: advanced track at or above two deviations: gifted track If Joe scored a 276, what is his z-score and which track should he be placed in?

• 11.04 gifted track

• 1.84 advanced track

• 9.2 gifted track

• 1.84 gifted track

A standardized test for determining entry to the placement in the math program at a school has an average score of 230 with a standard deviation of 25. The scale is as follows at or below two deviations: intervention track at or below one deviation: remedial track within one standard deviation: normal track at or above one deviation: advanced track at or above two deviations: gifted track Assuming a standard normal distribution. What percentage of the students should be in the normal track?

• 95

• 68

• 99.7

• 33

On a test the class average was a 50% with a standard deviation of 40%. Mr Chadman decided to grade on the belle curve. At or below 2 standard deviations is an F At or below 1 standard deviation is a D Within one standard deviation of the mean is a C. At or above one standard deviation is a B. At or above two standard deviations is an A. If Allie got an 85%, Zach got a 25%, and Isabel got a 100%. Which of the following are true.

• Allie and Zach got the same score

• It was impossible to get an A on this test after being set on this curve?

• Allie got an A

• Isabel got a B

When rolling two dice and summing the numbers, the average is 7, the standard deviation is 2.4. What is the normal range for the sum of two die?

Hint: can the sum be a decimal

• 2.2-11.4

• 2-11

• 3-11

• 1-12