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Worksheetsbiostatistics 1-100
Total questions: 100
Worksheet time: 50mins
Statistics which studies the issues related to the development and use of statistical methods in biology, medicine, pharmacy, hygiene and healthcare is called:
biostatistics
population health statistics
health system statistics
medical statistics
social statistics
The scale used to classify the properties of an object:
nominal
ordinal
interval
ratio
non-comparative
The scale in which the numbers are assigned to the objects to determine the relative extent to which certain characteristic is possessed:
ordinal
interval
ratio
nominal
non-comparative
The scale that shows the "range" of individual measurements of the variable:
interval
ratio
nominal
ordinal
non-comparative
The scale that shows the ratio of the measured values of the variable:
ratio
nominal
ordinal
interval
non-comparative
Variable that takes any numerical values depending on various circumstances is called:
random
constant
unchanged
reliable
nonrandom
. A random variable that takes numerical values separate from each other is called:
discrete
continuous
constant
interval
non-comparative
A random variable that takes on all the values in some interval of numbers is called:
continuous
discrete
constant
interval
rated
9. The number of students at the lecture is:
discrete variable
continuous variable
constant
interval variable
nominal variable
The number of patients admitted per day is:
discrete variable
continuous variable
constant
interval variable
nominal variable
9. The number of children in a family is:
discrete variable
continuous variable
constant
interval variable
nominal variable
The number of ambulance calls per hour is:
discrete variable
continuous variable
constant
interval variable
nominal variable
Body weight is:
continuous variable
discrete variable
constant
interval variable
nominal variable
Height is:
continuous variable
discrete variable
constant
interval variable
nominal variable
Blood pH is:
continuous variable
discrete variable
constant
interval variable
nominal variable
Brain volume is:
continuous variable
discrete variable
- constant
- interval variable
-nominal variable
Gender is:
nominal variable
discrete variable
- constant
- interval variable
-continuous variable
Nationality is:
nominal variable
discrete variable
- constant
- interval variable
-continuous variable
Marital status is:
nominal variable
discrete variable
- constant
- interval variable
-continuous variable
Patient’s diagnosis is:
nominal variable
discrete variable
- constant
- interval variable
-continuous variable
Number of times a patient sees her physician during the year is:
- discrete variable
-continuous variable
- constant
- interval variable
-nominal variable
A study of 300 households in a small town revealed that 20 percent had at least one school-age child present. What is the population in this study?
- all families of the city
-300 selected families
- 20 percent of families
- there is a school child in the family
-there is no school child in the family
A study of 300 households in a small town revealed that 20 percent had at least one school-age child present. What is the sample in this study?
- 300 selected families
-all families of the city
- 20 percent of families
- there is a school child in the family
-there is no school child in the family
A study of 300 households in a small town revealed that 20 percent had at least one school-age child present. What is the variable in this study?
- there is a school child in the family
-all families of the city
- 20 percent of families
- 300 selected families
-there is no school child in the family
A study of 250 patients admitted to a hospital during the past year revealed that, on the average, the patients lived 15 miles from the hospital. What is the population in this study?
- the number of patients in the last year
-250 patients
- 15 miles
- distance from home to hospital
-number of city hospitals
A study of 250 patients admitted to a hospital during the past year revealed that, on the average, the patients lived 15 miles from the hospital. What is the sample in this study?
- 250 patients
-the number of patients in the last year
- 15 miles
- distance from home to hospital
-number of city hospitals
A study of 250 patients admitted to a hospital during the past year revealed that, on the average, the patients lived 15 miles from the hospital. What is the variable in this study?
- distance from home to hospital
-the number of patients in the last year
- 15 miles
- 250 patients
-number of city hospitals
. The term "biometrics" introduced:
- F. Galton
-R. Fisher
- C. Pearson
- A. Ketle
-W. Weldon
The tasks of biostatistics DO NOT include:
- diagnosis
-qualitative presentation of biological facts
- a generalized set of facts
- the search for patterns
-the use of statistical methods for processing medical data
A group of subjects that are selected from the general population and is considered a representative of the real population for that specific study is:
- sample
-distribution
- frequency
- filtration
-sorting
Software that is NOT used for statistical processing of biomedical data:
- Word
-Excel
- SPSS
- Statistica
-SAS
In Excel, the intersection of a column and a row on a worksheet is called:
- cell
-value
- address
- column
-formula
The type of chart is useful for comparing values over categories is called:
- pie chart
-column chart
- line chart
- dot graph
-area chart
Excel function that counts how many cells in a range that contain numbers is:-
-SUM
- NUM
- AVERAGE
-MAX
COUNT
A features that displays only the data in column (s) according to specified criteria is:-
-formula
- sorting
- pivot
-addressing
filtering
Excel function checks whether a condition is true or not is:
- IF
-SUM
- COUNT
- MAX
-AVERAGE
In Excel, data is combined into:
- workbook
-request
- work area
- report
-work record
. In Excel any formula starts with a symbol:
=
*
–
+
/
In Excel, columns are labelled as:
- A, B, C, etc
-1,2,3 etc
A1, A2, A3 etc.
- $A$1, $A$2, $A$3 etc.
-A!1, B!1, C!1 etc.
In Excel, rows are labelled as:
- 1,2,3 etc
-A, B, C, etc
- A1, A2, A3 etc.
- $A$1, $A$2, $A$3 etc.
-A!1, B!1, C!1 etc.
A table that displays the frequency of various results in a sample:
- frequency distribution
-random variable
- population
- ordered array
-sample
A number that shows how many times the observation occurs in the sample:
- frequency
-mode
- median
- quantile
-variance
The frequency distribution is characterized by measures of:
- central tendency and dispersion
-discrete and interval
- complete and partial
- random and determined
-qualitative and quantitative
. The observation that divide the set of ordered observations into two equal parts such that half of the data are before it and the other are after it:
- median
-mode
- variance
- standard deviation
-mean
The observation which occurs most frequently:
- mode
-median
- variance
- standard deviation
-mean
Observations that divide a ordering sample into four equal-sized subgroups:
- quartiles
-quantiles
- deciles
- percentiles
-quintiles
Observations that divide a ordering sample into ten equal-sized subgroups:
- deciles
-quintiles
- quartiles
- quantiles
-percentiles
Observations that divide a ordering sample into one hundred equal-sized subgroups:
- percentiles
-deciles
- quartiles
- quantiles
-quintiles
Formula is used for:
- variance
-mean
- median
- standard deviation
-range
Formula is used for:
- standard deviation
-mean
- median
- variance
-range
Mean for grouped data is calculated via the formula:
Formula is used for:
- range
-mean
- median
- variance
-standard deviation
The number of intervals is calculated via the formula:
- k=1+3,322lg(n)
-h=(xmax-xmin)/k
- x1=xmin-0,5∙h
- k=1+3,322∙n
-k=2+2,322lg(n)
The width of the interval is calculated via the formula:
- h=(xmax-xmin)/k
-k=1+3,322lg(n)
- x1=xmin-0,5∙h
- k=1+3,322∙n
-k=2+2,322lg(n)
The number of intervals for a given frequency distribution:
- 6
-1
- 50
- 12,5
-8
The width of the intervals for a given frequency distribution:
- 1
-6
- 50
- 12,5
-8
The sample size for a given frequency distribution:
- 50
-6
- 1
- 12,5
-8,5
The lower limit of the first interval for a given frequency distribution:
- 12,5
-6
- 1
- 50
-8
The range for a given frequency distribution:
- 6
-12,5
- 1
- 50
-8
Determine the number of intervals for a given frequency distribution:
- 6
-10
- 189
- 60
-8
Determine the width of the intervals for a given frequency distribution:
- 10
-6
- 189
- 60
-8
Determine the sample size for a given frequency distribution:
- 189
-6
- 10
- 60
-8
Determine the lower limit of the first interval for a given frequency distribution:
- 30
-6
- 10
- 60
-189
Determine the range for a given frequency distribution:
- 60
-6
- 10
- 30
-189
Determine the number of intervals for a given frequency distribution:
- 7
-35
- 5
- 40
-45
Determine the width of the intervals for a given frequency distribution:
- 5
-35
- 7
- 40
-45
Determine the sample size for a given frequency distribution:
- 45
-35
- 5
- 40
-7
Determine the lower limit of the first interval for a given frequency distribution:
- 5
-35
- 45
- 40
-7
Determine the range for a given frequency distribution:
- 35
-5
- 45
- 40
-7
Determine the range of the sample using the graph below:
- 50
-140
- 90
- 120
-130
Determine the maximum and minimum values for three months according to the bar chart:
9 and 2
8 and 3
7 and 2
5 and 2
8 and 5
42. The picture shows:
- line plot
-box and whiskers plot
- stem and leaf plot
- in-column chart
-pie chart
The picture below shows:
- stem and leaf plot
-box and whiskers plot
- line plot
- in-column chart
-pie chart
This picture shows:
- box and whiskers plot
-stem and leaf plot
- line plot
- in-column chart
-pie char-pie chart
The graph shows:
- histogram
-stem and leaf plot
- line plot
- box and whiskers plot
-pie chart
This graph shows:
- polygon
-stem and leaf plot
- line plot
- box and whiskers plot
-pie chart
The numbers missing in the frequency table are:
- 65 and 70
-60 and 80
- 50 and 90
- 65 and 100
-60 and 70
The missing numbers in the frequency table are:
- 75 and 1
-60 and 8
- 50 and 9
- 75 and 3
-60 and 7
Numbers missing in the frequency table are:
- 45 and 45
-40 and 58
- 50 and 9
- 75 and 35
-60 and 7
Missing numbers in the frequency table are:
- 15 and 12
-12 and 15
- 15 and 1
- 12 and 5
-7 and 12
The numbers missing in the frequency distribution table are:
- 14 and 17
-17 and 14
- 17 and 4
- 14 and 7
-7 and 12
For a sample of patients we obtained the following graph for approximated hours which were spent without pain after a certain surgery. The sample size is:
- 80
-25
- 75
- 15
-50
For a sample of patients we obtained the following graph for approximated hours which were spent without pain after a certain surgery. The number of patients stayed the longest time without pain is:
- 5
-10
- 25
- 7
-80
For a sample of patients we obtained the following graph for approximated hours which were spent without pain after a certain surgery. The number of patients stayed the shortest time without pain is:
- 10
-5
- 25
- 7
-80
For a sample of patients, we obtained the following graph for approximated hours which were spent without pain after a certain surgery. The number of patients, who spent 3 hours or more without pain is:
- 30
-20
- 10
- 5
- 25
The following histogram shows the frequency distribution of pathologic tumor size (in cm) for a sample of cancer patients. The sample size is:
- 110
-100
- 50
- 80
-38
The following histogram shows the frequency distribution of pathologic tumor size (in cm) for a sample of cancer patients. The number of patients with the smallest tumor size is:
- 11
-15
- 37
- 18
-16
The following histogram shows the frequency distribution of pathologic tumor size (in cm) for a sample of cancer patients. The number of patients with the largest tumor size is:
- 11
-15
- 37
- 18
-16
The following histogram shows the frequency distribution of pathologic tumor size (in cm) for a sample of cancer patients. The number of patients with a tumor size of 2 cm or more is:
- 26
-11
- 17
- 10
-37
42. The following histogram shows the frequency distribution of pathologic tumor size (in cm) for a sample of cancer patients. The number of patients with a tumor size of 1 cm or less is:
- 48
-37
- 50
- 10
-25
42. The following data about the number of decayed teeth in 16 children: 3, 5, 2, 4, 0, 1, 3, 5, 2, 3, 2, 3, 3, 2, 4, 1. Frequency table for this data is:
42. The following data about the number of decayed teeth in 16 children: 3, 5, 2, 4, 0, 1, 3, 5, 2, 3, 2, 3, 3, 2, 4, 1. The numbers missing in the frequency table are:
- 1 and 5
-2 and 4
- 3 and 3
- 2 and 2
-1 and 1
42. The following data about the number of decayed teeth in 16 children: 3, 5, 2, 4, 0, 1, 3, 5, 2, 3, 2, 3, 3, 2, 4, 1. The numbers missing in the frequency table are:
- 2 and 2
-2 and 4
- 3 and 3
- 1 and 5
-1 and 1
42. Using the frequency distribution table find the number of children who have more than 3 decayed teeth:
- 4
-1
- 2
- 3
-5
Using the frequency distribution table find the number of children who have 4 or more decayed teeth:
- 4
-1
- 2
- 3
-5
. Using the frequency distribution table find the number of children who have less than 3 decayed teeth:
- 7
-1
- 2
- 3
-5
Using the frequency distribution table find the number of children who have 2 or less decayed teeth:
- 7
-1
- 2
- 3
-5
Using the frequency distribution table find the number of people in age less than 50 years:
- 57
-70
- 132
- 46
-11
Using the frequency distribution table find the number of people in age less than 60 years:
- 127
-70
- 132
- 46
-11
Using the frequency distribution table find the number of people in age more than 60 years:
- 62
-70
- 17
- 45
