Mean Calculation – NBC Institute

QTB – May 2017 – L1 – SA – Q9 – Data Collection Analysis

This question identifies the reasons why the mean is preferred for statistical calculations.

Question

The mean is the most commonly used statistics for further statistical calculations because it:
A. Tends to lie at the centre of a set of data
B. Is easy to calculate
C. Takes all observations in the data into consideration
D. Is the most popular
E. Is not affected by extreme values in the data

Answer

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Tags: Central Tendency, Mean Calculation, Statistical Calculations
Level: Level 1

Topic: Data Collection Analysis
Series: MAY 2017

QTB – MAY 2016 – L1 – SA – Q8 – Statistics

Calculate the number of items in original data set given mean changes

Question

The mean of a certain number of observations is 40. If two items with values 50
and 64 are added to this data, the mean rises to 42. The number of items in the
original data is

A. 12
B. 13
C. 14
D. 15
E. 16

Answer

Find Related Questions by Tags, levels, etc.

Tags: Data Analysis, Mean Calculation
Level: Level 1

Topic: Statistics
Series: MAY 2016

QTB – May 2017 – L1 – SA – Q9 – Data Collection Analysis

This question identifies the reasons why the mean is preferred for statistical calculations.

Question

Answer

Find Related Questions by Tags, levels, etc.

Tags: Central Tendency, Mean Calculation, Statistical Calculations
Level: Level 1

Topic: Data Collection Analysis
Series: MAY 2017

QTB – MAY 2016 – L1 – SA – Q8 – Statistics

Calculate the number of items in original data set given mean changes

Question

The mean of a certain number of observations is 40. If two items with values 50
and 64 are added to this data, the mean rises to 42. The number of items in the
original data is

A. 12
B. 13
C. 14
D. 15
E. 16

Answer

Find Related Questions by Tags, levels, etc.

Tags: Data Analysis, Mean Calculation
Level: Level 1

Topic: Statistics
Series: MAY 2016

Question Tag: Mean Calculation

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QTB – May 2017 – L1 – SA – Q9 – Data Collection Analysis

This question identifies the reasons why the mean is preferred for statistical calculations.

QTB – MAY 2016 – L1 – SA – Q8 – Statistics

Calculate the number of items in original data set given mean changes

QTB – May 2017 – L1 – SA – Q9 – Data Collection Analysis

This question identifies the reasons why the mean is preferred for statistical calculations.

QTB – MAY 2016 – L1 – SA – Q8 – Statistics

Calculate the number of items in original data set given mean changes

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Question Tag: Mean Calculation

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QTB – May 2017 – L1 – SA – Q9 – Data Collection Analysis

This question identifies the reasons why the mean is preferred for statistical calculations.

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QTB – MAY 2016 – L1 – SA – Q8 – Statistics

Calculate the number of items in original data set given mean changes

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QTB – May 2017 – L1 – SA – Q9 – Data Collection Analysis

This question identifies the reasons why the mean is preferred for statistical calculations.

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QTB – MAY 2016 – L1 – SA – Q8 – Statistics

Calculate the number of items in original data set given mean changes

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