Biostatistics Unit 1

Question 1

What is the measure that identifies the midpoint of a distribution?

Accepted Answer

Median

Question 2

When selecting pairs of a dividend and finding the square root, where do you start the pairing?

Accepted Answer

beginning from the decimal from the left and right

Question 3

Which of the following is NOT a method of illustrating statistical info in one coordinate?

Accepted Answer

table

Question 4

Which frequency measure is expressed as a fraction?

Accepted Answer

proportion

Question 5

What is the range for class intervals for graphs and maps?

Accepted Answer

3-6

Question 6

What is used to represent the epidemic curve?

Accepted Answer

Histogram

Question 7

What is the arithmetic average which is most influenced by extremes?

Accepted Answer

Mean

Question 8

Which of the following is preferred for normal distributions?

Accepted Answer

Mean

Question 9

If negatively skewed, the direction of the tail is distorted to what direction?

Accepted Answer

to the left

Question 10

Which of the following is the preferred method for skewed distributions?

Accepted Answer

Median

Question 11

Which of the following is NOT a type of bias?

Accepted Answer

Randomization

Question 12

Which of the following is NOT a component of the frequency table?

Accepted Answer

Frequency distribution

Question 13

What is the consequence of bias?

Accepted Answer

conclusions drawn can be false

Question 14

If positively skewed, the direction of the tail is distorted to what direction?

Accepted Answer

to the right

Question 15

What is the procedure for rounding if the last digit is 5 and the preceding digit is an odd?

Accepted Answer

raise the digit to the next even number

Question 16

Which of the following is the correct order of operations?

Accepted Answer

PEMDAS

Question 17

What is the basic type of probability sample?

Accepted Answer

Simple Random Sample

Question 18

What types of variables are used in statistics?

Accepted Answer

Frequency

Question 19

What are two types of tables used?

Accepted Answer

two variable, frequency distribution

Question 20

Which of the following does NOT minimize selection bias?

Accepted Answer

maximize accuracy of data

Question 21

What type of error may be introduced into the design of a study?

Accepted Answer

Bias

Question 22

What is used to present data from a one variable frequency distribution table?

Accepted Answer

Bar Chart

Question 23

What is the most frequently observed value?

Accepted Answer

Mode

Question 24

What is the range for class intervals for tables?

Accepted Answer

4-8

Biostatistics Unit 1

Questions 24

Biostatistics Unit 1

Questions 24