After entering the test scores from her statistics class of 25 students, the instructor calculated the mean and the median of the scores. upon checking, she discovered that the top score entered was 48, but it should have been 58. when she corrects this score, how will the mean and median be affected

After entering the test scores from her statistics class of 25 students, the instructor calculated the mean and the median of the scores. Upon checking, she discovered that the top score entered was 48, but it should have been 58. When she corrects this score, how will the mean and median be affected

Solution: Mean is the sum of scores divided by the number of scores.

Therefore, when the data set is corrected by entering the top score 58 in place of 48, the mean will be increase as total value will be higher than before (though n=25)

Therefore, the mean will get affected after making the correction.

The median is middle value of the data, which divides the data into two equal halves. Therefore, changing the largest value in the series will have no impact on the middle value. Hence the median will remain unaffected.

step-by-step explanation:

c.   x=2.4cm

step-by-step explanation:

similar triangles are triangles which have the same shape but not the same size. this means their angle measures are equal but their side lengths are not instead they are proportional. to solve, we will set up a proportion and solve.

a proportion is two equal ratios set equal to each other. we form the ratios by finding corresponding sides (sides which match to each other on both triangles by their position). out ratios will be one side of the small triangle over the corresponding side on the big triangle as shown below:

.

to solve the proportion, we'll cross multiply by multiplying numerator with denominator across the equal sign.