A researcher administers an achievement test to assess and indicate the possible effect of an independent variable in his/her study. The distribution of scores on the test is found to be negatively skewed. On the basis of this, what can be started with regard to the difficulty level of the test?

• A. The test is very easy
• B. The test is very difficult
• C. The test is neither easy nor difficult
• D. The test is easy and needs normalization