The Following are the scores of 20 students who took

jazzcutie0h

jazzcutie0h

Answered question

2021-11-30

The scores of the twenty students who took the calculus exam are as follows. Find the mean and standard deviation of the given data. 
To the nearest tenth, if required.
Score768285909295Frequency523433

Answer & Explanation

Fachur

Fachur

Beginner2021-12-01Added 17 answers

Step 1
Mean
=xififi
=76(5)+82(2)+85(3)+90(4)+92(3)+95(3)20
=86
Step 2
For standard deviation, we make a table
datadatamean(datamean)2frequency(datamean)2frequency761010055008241623285113390416464926363108959813243
Then we add the values form the last column
(xix)2fi=950
Then we use it to find the standard deviation
(xiX)2fin=95020=6.9
Answer: Mean=86
Standard deviatiion =6.9

Do you have a similar question?

Recalculate according to your conditions!

New Questions in High school statistics

Ask your question.
Get an expert answer.

Let our experts help you. Answer in as fast as 15 minutes.

Didn't find what you were looking for?