A test with normally distributed results was returned to a class of 100 students. Later, the teacher realized an error was made and added 10 points to each students' score. Which of the following must have changed as a result of the increase in scores?
A) A student's percentile rank
B) The standard deviation of the scores
C) The variance of the scores
D) The skew of the distribution
E) The mode

Question

03-02-2020
Social Studies

contestada

A test with normally distributed results was returned to a class of 100 students. Later, the teacher realized an error was made and added 10 points to each students' score. Which of the following must have changed as a result of the increase in scores?
A) A student's percentile rank
B) The standard deviation of the scores
C) The variance of the scores
D) The skew of the distribution
E) The mode

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Tundexi Tundexi · Answer 1 · 2022-01-14T12:02:20+01:00

The measure of student's percentile rank, standard deviation of the scores, variance of the scores, skew of the distribution and mode will been changed as a result of the increase in scores.

Normally, the score indicated is the first step in Distribution table and it is used to prepare the Frequency score, X, Mid-point etc.

Hence, the measure of student's percentile rank, standard deviation of the scores, variance of the scores, skew of the distribution and mode will been changed as a result of the increase in scores.

Therefore, the All of given option is correct.