Are you ready to take your first step toward achieving your goal?
- 10 diagnosis quiz questions
- 10 minutes in duration
- Required to attempt all questions
- A mixture of short answer and multiple-choice questions
- Instant feedback straight after the test
OK, let’s get started now!
Are you ready to take your first step toward achieving your goal?
- Ten diagnosis quiz questions
- Ten minutes in duration
- Required to attempt all questions
- A mixture of short-answer and multiple-choice questions
- Instant feedback straight after the quiz
OK, let’s get started now!
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- Question 1 of 10
1. Question
Estimate the mean of the data.
\( \begin{array}{|c|c|c|c|c|c|} \hline
Class & 200 \le x \lt 300 & 300 \le x \lt 400 & 400 \le x \lt 500 & 500 \le x \lt 600 & 600 \le x \lt 700 \\ \hline
Frequency (f) & 21 & 23 & 29 & 35 & 17 \\ \hline
\end{array} \)Sum of scores \( = \) \( \times 21 + \) \( \times 23 + \) \( \times 29 + \) \( \times 35 + \) \( \times 17 = \)
Sum of frequencies \( = \) \( + \) \( + \) \( + \) \( + \) \( = \)
Mean \( = \) \( \div \) \( = \)
CorrectIncorrect - Question 2 of 10
2. Question
Find the interquartile range of the data represented in the box-and-whisker plot.
\( \begin{array}{c|cccccc}
1 & 1 & 2 &&&& \\
2 & 2 & 5 & 6 & 9 && \\
3 & 0 & 2 & 3 &&& \\
4 & 1 & 4 &&&& \\
\end{array} \)List the scores in ascending order.
The upper quartile is .
The lower quartile is .
The interquartile range is .
CorrectIncorrectHint
Interquartile Range = Upper Quartile – Lower Quartile
- Question 3 of 10
3. Question
The table shows Amy’s results for two tests. Which test is the better result for Amy compared to her class?
\( \begin{array}{|c|c|c|c|} \hline
\text{test} & \text{Amy’s result} & \text{class mean} & \text{class standard deviation} \\ \hline
A & 82 & 75 & 7 \\ \hline
B & 86 & 77 & 10 \\ \hline
\end{array} \)\(A\) or \(B\)
CorrectIncorrect - Question 4 of 10
4. Question
Select the corresponding frequency table for the cumulative frequency graph shown.
CorrectIncorrect - Question 5 of 10
5. Question
Describe the strength of the linear relationship with correlation coefficient \(r = – 0.3\).
CorrectIncorrect - Question 6 of 10
6. Question
If the equation of the line of best fit is \(y = mx + b\), find \(m\) and \(b\).
\(m = \) , \(b = \)
CorrectIncorrect - Question 7 of 10
7. Question
Use technology to find the equation, \(y = mx + b\) of the linear regression for the data by considering any outliers. Express coefficients correct to two decimal places.
\( \begin{array}{|c|c|c|} \hline
x & 1 &4 &8 &13 &15 &19 &21 \\ \hline
y & 34 &31 &29 &23 &0 &17 &1 \\ \hline
\end{array} \)\(m = \) , \(b = \)
CorrectIncorrect - Question 8 of 10
8. Question
A fair coin is tossed 4 times. If \(X \) represents the number of tails obtained, find \(E\left( X \right)\).
CorrectIncorrect - Question 9 of 10
9. Question
The marks in an exam were normally distributed with mean 60% and standard deviation of 8%. Between what marks will a score almost certainly lie?
Between and
CorrectIncorrect - Question 10 of 10
10. Question
In which of the following subjects did John achieve his best result?
\( \begin {array} {|c|c|c|} \hline
subject & mean & standard \ deviation & John’s \ mark \\ \hline
chemist & 75 & 7 & 73 \\ \hline
economy & 70 & 6 & 73 \\ \hline
finance & 65 & 5 & 73 \\ \hline
geography & 80 & 8 & 73 \\ \hline
\end{array} \)\(z\)-score on chemistry:
\(z\)-score on economy:
\(z\)-score on finance:
\(z\)-score on geography:
Which is the best result? (chemistry/economy/finance/geography)
CorrectIncorrect