1. Which of the following statements is not true? a) One form of descriptive sta

Question

1. Which of the following statements is not true?

a) One form of descriptive statistics uses graphical techniques

b) One form of descriptive statistics uses numerical techniques

c) In the language of statistics, population refers to a group of people

d) Statistical inference is used to draw conclusions or inferences about characteristics of populations based on sample data

e) None of these

2. The most important and common graphical presentation of interval data is a

a) bar chart

b) histogram

c) pie chart

d) cumulative frequency distribution

e) none of these

3. Which of the following statements about the arithmetic mean is not always correct?

a) The sum of the deviations from the mean is zero

b) Half of the observations are on either side of the mean

c) The mean is a measure of the middle (center) of a distribution

d) The value of the mean times the number of observations equals the sum of all of the observations.

e) None of these

Explanation / Answer

1. Which of the following statements is not true?

Ans:c) In the language of statistics, population refers to a group of people

2. The most important and common graphical presentation of interval data is a

Ans:b)Histogram

3. Which of the following statements about the arithmetic mean is not always correct?

Ans:b) Half of the observations are on either side of the mean

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