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2.1 Qs 5-9 Interpreting numerical reasoning data

2.1 Qs 5-9 Interpreting numerical reasoning data

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Question 1 of 13

1. Question

The downloadable Excel file contains a set of scores for 30 candidates who have completed a numerical reasoning (NR) test. Please complete the columns for mean (x̄), Score – x̄, and the difference squared and upload your completed spreadsheet. Keep a copy of your completed spreadsheet handy as you will need to refer to it for later questions in this quiz. 2.1 Q5 downloadable data

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Question 2 of 13

2. Question

Using the dataset from the previous question and the downloadable frequency table template (below), please complete a frequency table for the total dataset for numerical reasoning raw scores (i.e., NR score). Instructions are provided in the downloadable template. Please upload your completed frequency table.2.1 Q6 Downloadable data frequency table

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Question 3 of 13

3. Question

You just created a frequency table for the total data set for numerical reasoning raw scores. Is this a normal distribution?

Yes.
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No.
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Question 4 of 13

4. Question

Again, using the downloadable frequency table (below) and the dataset from earlier, please complete a frequency table for the numerical reasoning scores for females. Please upload your completed frequency table. 2.1 Q6 Downloadable data frequency table

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Question 5 of 13

5. Question

What is the median of the female numerical reasoning raw scores?

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Hint

Remember: the median is the middle number when all the numbers are put in order from smallest to largest.
Question 6 of 13

6. Question

What do you notice about this distribution?

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Hint

Hint: consider whether it is normally distributed or not.
Question 7 of 13

7. Question

Using the 30 numerical reasoning raw scores dataset and the downloadable frequency table (below), please complete a frequency table for the male dataset for numerical reasoning raw scores. Please upload your completed frequency table. 2.1 Q6 Downloadable data frequency table

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This response will be awarded full points automatically, but it can be reviewed and adjusted after submission.

Grading can be reviewed and adjusted.

Grading can be reviewed and adjusted.
Question 8 of 13

8. Question

What is the mode of the male numerical reasoning raw scores?

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Hint

Remember, the mode is the most frequently occurring value in a distribution.
Question 9 of 13

9. Question

What do you notice about this distribution?

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Hint

Think about skew when answering this question.
Question 10 of 13

10. Question

Using the numerical reasoning dataset from earlier, work out to the nearest whole number the mean male numerical reasoning raw score.

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Hint

Remember: to find the mean, you add up all the numbers in your group, then divide by how many numbers there are.
Question 11 of 13

11. Question

Using the numerical reasoning dataset from earlier, work out to the nearest whole number the mean female numerical reasoning raw score.

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Hint

Remember: the mean is calculated by adding up all the numbers in the group, then dividing by how many numbers there are.
Question 12 of 13

12. Question

Using the numerical reasoning dataset from earlier, what is the sum of squares for the whole dataset?

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Hint

Remember: the sum of squares is calculated by adding up all the scores in column G (i.e., ‘difference squared’).
Question 13 of 13

13. Question

Using the numerical reasoning dataset from earlier, what is the standard deviation for the whole dataset (males and females) to the nearest whole number? (Please keep this number to hand as you will need it in later quizzes).

Correct Incorrect Correct answer

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Hint

Remember: you calculate the standard deviation by dividing the sum of squares by one less than the total number of scores (i.e., 30-1) and calculating the square root of the product.