# stats

If a student scored 75 points on a test where the mean score was 83.5 and the standard deviation was 3.1. The student's z score is ________.

1. 0
2. 0
3. 11
1. Z = (score-mean)/SD

Insert values and calculate.

1. 0
2. 0
posted by PsyDAG
2. 0.88

1. 0
2. 0
posted by ngozi
3. 0.23

1. 0
2. 0
posted by Anderson

## Similar Questions

1. ### statistics

A student scored 84 points on a test where the mean score was 79 and the standard deviation was 4. Find the student's z score, rounded to 2 decimal places

asked by RGCLARK on February 24, 2012
2. ### Math

9 students in a group found that their mean score was 86 for the first math test. On the next test, each student in the group scored 7 points higher than on the first text. What was their mean score for the two tests? Any help

asked by Rose on September 25, 2012
3. ### algebra

: a student scored 73 out of 100 on a test. If the maximum score on the next text is also 100 points, what score does the student need to maintain an average of 81?

asked by Mary on August 7, 2015
4. ### statistics

1. Suppose you administered an anxiety test to a large sample of people and obtained normally distributed scores with a mean of 45 and a standard deviation of 4. Do not use the web calculator to answer the following questions.

asked by Anonymous on February 7, 2016
5. ### Statistics- Math

One student scored 54 on a math test for which the mean score was 50.5 and the standard deviation was 3.2. Another student scored 80 on a chemistry test for which the mean score was 75.2 and the standard deviation was 5.2. Which

asked by Kerrin on February 17, 2012
6. ### Math CSET

A student scores 96 on a test. The class average is 84, with a standard deviation of 4 points. What percentage of the class scored below this student? I understand the 96-84/4 part to obtain a z-score of 3. What I do not

asked by Michael on July 21, 2016
7. ### social science statistics

a professor was curious to whether the students in a very large class she was teaching who turned in their first scored differently from the overall mean on the test.The overall mean score on the test was 75 with a standard

asked by mike on April 9, 2013
8. ### Math

A student scored 65, 80, 74 on the first three tests during the term. What does the student need to score on the fourth test to ensure and an average score that is above 75?