RM - Data Handling Review (L)

Multiple Choice

What is the type of correlation?

• Negative 
• no association
• positive 

Multiple Choice

The scatter plot shows the relationship between the number of chapters and the total number of pages for several books.  Use the trend line to predict how many chapters would be in a book with 180 pages. 

• 12 chapters
• 15 chapters
• 18 chapters
• 21 chapters

Multiple Choice

You are analyzing a scatter plot that has a negative correlation. What is true of the of the x and y values?

• As x increases, y decreases
• As x increases, y increases
• As x decreases, y decreases

Draw

Draw a sketch of a strong positive correlation

Draw

Draw a sketch of a weak negative correlation

Multiple Select

Identify the two correct statements:

• Quantitative data is more objective

• Qualitative data is more objective

• Quantitative data is more subjective

• Qualitative data is more subjective

Multiple Choice

Which type of data is more time consuming to analyse?

• Qualitative data

• Quantitative data

Multiple Select

Primary data can be obtained through:

• Experiments

• Observations

• Interviews and questionnaires

• Internet sources

• Company documents

Multiple Choice

Identify the data at both levels: how long it takes to do your homework in minutes

• Qualitative Nominal

• Qualitative Ordinal

• Quantitiative Interval/Ratio

• Quantitiative Nominal

Multiple Choice

Identify the data at both levels: Your class in high school: Freshman, Sophomore, Junior, Senior

• Qualitative Nominal

• Qualitative Ordinal

• Quantitiative Interval/Ratio

• Quantitiative Nominal

Multiple Choice

What type of categorical data is: Favourite magazine of each student in your year level

• Nominal

• Ordinal

Multiple Choice

Classify the data: Weight of trucks on the Garden State Parkway

• nominal

• ordinal

• interval

• ratio

Multiple Choice

Classify the data: Letter grades (A, B, C, D, F) on a project

• nominal

• ordinal

• interval

• ratio

Multiple Choice

What is the level of measurement: A likert scale measuring how satisfied you are with an app: dislike, it ok, like it , love it

• ratio

• interval

• nominal

• ordinal

Multiple Select

What are the three measures of central tendency? (Check all the apply)

• range

• median

• quartile

• mode

• mean

Multiple Choice

Which of these is an advantage of calculating the mean?

• It uses all of the data
• It can be used on nominal data
• It can be used on ordinal data

Multiple Choice

Which of these is an advantage of calculating the mode?

• It uses all of the data
• It can be used on nominal data
• It can be used on ordinal data

Multiple Choice

Find the median of these numbers:
4,2,7,4,3

• 2
• 5
• 7
• 4

Multiple Choice

Which 'average' is always found at the highest point of the curve?

• Mode

• Median

• Mean

Open Ended

Explain one reason why the mean would be the most appropriate measure of central tendency to summarise this data

Open Ended

What would be the most appropriate measure of central tendency for this data, and why [2 marks]

Drag and Drop

This distribution is (a) ​

Placeholder

so we should use the (b) ​

Placeholder

as a measure of central tendency and the (c) ​

Placeholder

as a measure of variability.

Drag these tiles and drop them in the correct blank above

fairly symmetric

mean

standard deviation

left skewed

range

mode

median

IQR

right skewed

Multiple Choice

Scores pile up at the low end of the scale in 

• a negatively skewed distribution
• a positively skewed distribution
• any skewed distribution
• a normal distribution

Multiple Choice

Dr. Kleiman gives an exam where most of the students receive failing grades and only a few students receive high scores.  When the exam scores are plotted, the distribution will be

• positively skewed
• negatively skewed
• symmetrical
• impossible to predict without more information

Multiple Choice

In a strongly skewed distribution, the best indicator of central tendency is usually the

• mean
• median
• mode
• standard deviation

Multiple Choice

When scores are "bunched up"in the center of a distribution, the

• mean will be relatively low

• standard deviation will be relatively low

• correlation coefficiaent will be a negative number

• standard deviation will be relatively high

Draw

A psychologist investigating egocentrism interviewed 100 parents, each of whom had a 4 year old child. She asked each parent to rate his or her child's egocentrism on a scale of 0-10, with 0 representing no egocentrism and 10 representing extreme egocentrism.

The psychologist calculated measures of central tendency for the egocentrism scores. They found that the mean egocentrism score was 4.8, the median score was 5, and the mode egocentrism score was 6.

Sketch a graph to show the most likely distribution curves for the egocentrism scores in this study. Label the axes of your graph and mark on it the positions of the mean, median and mode.

[3 marks]