Mean, Mode, Median HBL CT task

Computational Thinking Task

Sec 4E5N HBL
Mean, Mode, Median

Multiple Choice

Section A: Mean

When we intend to calculate the mean of a data set, we first need to determine if the data is ungrouped or grouped.

Study the partially completed flowchart. What does n represent?

• sum of values in the data set

• number of values in the data set

• sum of the scores in the data set

• number of groups in the data set

Multiple Choice

Section A: Mean

In the partially completed flowchart shown, what should be written in the box labelled 'A'?

• Have you calculated Σx?

• Have you calculated x?

• Have you calculated Σf?

• Have you calculated f?

Multiple Choice

Section A: Mean

In the partially completed flowchart shown, what is the mid-value, x?

• The class interval at the middle of the data set

• The middle position of the data set

• The data value at the middle position of the data set

• The data value in the middle of a class interval

Multiple Choice

Section A: Mean

In the partially completed flowchart shown, what should be written in the box labelled 'B'?

• Have you calculated fx?

• Have you calculated x?

• Have you calculated Σf?

• Have you calculated Σfx?

Fill in the Blanks

Multiple Choice

Section B: Median

The mean is a very useful way of expressing the average of a set of data. However, it does have some limitations. For example, if there are ___________, it cause the mean to give a less accurate indication of the average of the data set.

In these cases, the median is often a good alternative for obtaining an average value.

• very large values

• extreme values

• very small values

• too many values

Multiple Choice

Section B: Median

The incomplete flowchart shown is for finding the median of a set of data. What should be written in the box labelled "C"?

• Has the minimum value of the data set been identified?

• Have the data values been arranged in ascending order?

• Has the sum of the data set been identified?

• Has the maximum value of the data set been identified?

Multiple Choice

Section B: Median

In the incomplete flowchart shown, what should be written in the box labelled "D"?

• Has the middle position been determined?

• Has the sum of the data set been identified?

• Has the range of the data set been found?

• Has the frequency of each data value been found?

Multiple Choice

Section B: Median

In the incomplete flowchart shown, what should be written in the box labelled "E"?

• Median = Data value just before middle position

• Median = Data value just after middle position

• Median = Data values before and after middle position

• Median = Mean of the two values identified

Fill in the Blanks

Fill in the Blanks