Bissoy.com
Doctors Medicines MCQs Q&A

In which of the following ways is the pattern-seeking test method different from the unbiased test checking method? I. In pattern-seeking, pupils cannot easily manipulate or control variables because they are working with natural systems. II. In pattern-seeking, students should keep in mind the increased importance of selecting an appropriate sample size, taking into account the natural variation within samples.

In which of the following ways is the pattern-seeking test method different from the unbiased test checking method? I. In pattern-seeking, pupils cannot easily manipulate or control variables because they are working with natural systems. II. In pattern-seeking, students should keep in mind the increased importance of selecting an appropriate sample size, taking into account the natural variation within samples. Correct Answer Both I and II

Investigate means to enquire into or to study carefully. The purpose of investigations is the belief that they will help develop scientific literacy. By engaging in processes similar to those of professional scientists pupils will be better able to understand how scientific knowledge is created and to take part in debate about scientific issues. Types of investigations:

  • Fair testing: These investigations are concerned with observing and exploring relations between variables. Systematic changes in the independent variable are compared with changes in the outcome, or dependent, variable. The emphasis in such investigations is for pupils to identify one (or more) independent variable(s) to be manipulated independently of other factors. Pupils must then control the other factors, for a ‘fair test’. Examples: What affects the rate at which sugar dissolves in water?
  • Pattern-seeking: These investigations involve observing and recording natural phenomena or carrying out surveys and then seeking patterns in their findings. They have many similarities to Fair Testing investigations but have three significant differences. Firstly, because they are dealing with natural systems, pupils cannot manipulate or control variables as easily. Secondly, pupils initiate the investigation differently: they notice an effect, or the dependent variable first e.g. the dandelions near the hedge seem to have longer leaves than those away from the hedge, and then structure the investigation around finding a possible cause for the effect. Finally, they have to take into account the increased importance of selecting a suitable sample size in order to account for natural variation within samples. Examples: Where do we find most snails?

Other types of investigation are:

  • Exploring
  •  Classifying and Identifying
  • Investigating Models
  •  Making Things or Developing Systems

Hence, we conclude that both the above statements are true.

Related Questions

In a survey of 100 students, it was found that 25 students have enrolled for Navy AA test series, 26 students have enrolled for NDA test series, 26 students have enrolled for Airforce group X test series, 9 students have enrolled for both Navy AA and Airforce group X test series, 11 students have enrolled for both Navy AA and NDA test series, 8 students have enrolled for both NDA and Airforce group X test series whereas 3 students have enrolled in all three test series. Find the number of students who has not enrolled in any of the test series.
In a survey of 100 students, it was found that 25 students have enrolled for Navy AA test series, 26 students have enrolled for NDA test series, 26 students have enrolled for Airforce group X test series, 9 students have enrolled for both Navy AA and Airforce group X test series, 11 students have enrolled for both Navy AA and NDA test series, 8 students have enrolled for both NDA and Airforce group X test series whereas 3 students have enrolled in all three test series. Find the number of students who have enrolled exactly in any two test series.
In a survey of 100 students, it was found that 25 students have enrolled for Navy AA test series, 26 students have enrolled for NDA test series, 26 students have enrolled for Airforce group X test series, 9 students have enrolled for both Navy AA and Airforce group X test series, 11 students have enrolled for both Navy AA and NDA test series, 8 students have enrolled for both NDA and Airforce group X test series whereas 3 students have enrolled in all three test series. Find the number of students who have enrolled in exactly one test series.
Which of the following statements are true with regards to the selection of a sample size? (i) The sample size (n) may be a fixed percentage of lot size (N). (ii) The sample size (n) may be kept constant irrespective of lot size (N). (iii) Sample size (n) can be selected at the personal whim of the inspector.
The number of pupils of a class is 55. The ratio of the number of male pupils to the number of female pupils is 5: 6. The number of female pupils is
Which of the following statements is/are correct about the unbiased test method used by the teacher in science class? I. They are able to see and search for relationships between variables. II The emphasis is on students to identify one or more independent variables to manipulate them independently of other factors.
The number of students taking admission in First Year of a Degree Course at a college in areas of Social Sciences in 2012 was as follows: Economics (S1) - 96, Psychology (S2) - 84, History (S3) - 160. Political Science (S4) - 120. Sociology (S5) - 125. The break-up of students in different subjects has been presented through the given pie chart. Study the pie chart and answer the question that follows. In 2013, 20% of the Sociology students, 25% of the Political Science students, and one-sixth of the Economics students shifted to another college, and the number of History students got increased by 10% due to students shifting from other colleges. Over and above this, 10% of the remaining Sociology students and one-seventh of the Psychology students got transferred to Economics. What will be the central angle (to the nearest degree) of the sector corresponding to History in the pie chart, representing the break-up in 2013? 
Read the following passage and answer the item that follows. Your answers to this item should be based on the passage only. Many farmers use synthetic pesticides to kill infesting insects. The consumption of pesticides in some of the developed countries is touching 3000 grams/hectare. Unfortunately, there are reports that these compounds possess inherent toxicities that endanger the health of the farm operators, consumers and the environment. Synthetic pesticides are generally persistent in environment. Entering in food chain they destroy the microbial diversity and cause ecological imbalance. Their indiscriminate use has resulted in development of resistance among insects to insecticides, upsetting of balance in nature and resources of treated populations. Natural pest control using the botanical pesticides is safer to the user and the environment because they break down into harmless compounds within hours or days in the presence of sunlight. Plants with pesticidal properties have been in nature for millions of years without any ill or adverse effects on the ecosystem. They are easily decomposed by many microbes common in most soils. They help in the maintenance of biological diversity of predators and human health hazards. Botanical pesticides formulated from plants are biodegradable and their use in crop protection is a practical sustainable alternative. Which of the following statements is/are correct regarding biopesticides? 1. They are not hazardous to human health. 2. They are persistent in environment. 3. They are essential to maintain the biodiversity of any ecosystem. Select the correct answer using the code given below.
Read the passage carefully and choose the best answer to each question out of the four alternatives and click the button corresponding to it.
Dyslexia is a perceptual disorder often occurring in persons of normal, or even above average intelligence. The reader is unable to perceive correctly what is on a page. Letters and numbers often appear reversed: "b" seems to be "d","quite" is "quiet" and "from" is "form". The reader tends to leave out letters or words or insert words or letters that are not there. Vowel and consonant sounds may be confused. Many dyslexics are left­handed or able to write with either hand. They often confuse left and right. Learning to speak may also be delayed beyond infancy. The condition seems to be inherited. It may persist into adulthood. However, with early recognition and specialized approaches to teaching reading, most dyslexics can learn to read. Some researchers believe that latent dyslexia may be aggravated by the way reading is taught. The modern whole­word, or look­and­say, method seems to be more of a hindrance to learning for dyslexics than it is for ordinary pupils. The phonetic method of teaching students to learn letters and sound them out appears to achieve better reading results. The problem of words that cannot be sounded out ­ such as rough, laugh or through ­ is not solved by phonetics. These words must simply be memorized. However, for children with dyslexia the problem can be compounded by the failure of parents or teachers to recognize the condition. This can easily lead to emotional problems for dyslexic children, who cannot understand their failure to keep up with their classmates.
Dyslexia, often occurring in persons of normal, or even above average intelligence, is a __________
Read the passage carefully and choose the best answer to each question out of the four alternatives and click the button corresponding to it.
Dyslexia is a perceptual disorder often occurring in persons of normal, or even above average intelligence. The reader is unable to perceive correctly what is on a page. Letters and numbers often appear reversed: "b" seems to be "d","quite" is "quiet" and "from" is "form". The reader tends to leave out letters or words or insert words or letters that are not there. Vowel and consonant sounds may be confused. Many dyslexics are left­handed or able to write with either hand. They often confuse left and right. Learning to speak may also be delayed beyond infancy. The condition seems to be inherited. It may persist into adulthood. However, with early recognition and specialized approaches to teaching reading, most dyslexics can learn to read. Some researchers believe that latent dyslexia may be aggravated by the way reading is taught. The modern whole­word, or look­and­say, method seems to be more of a hindrance to learning for dyslexics than it is for ordinary pupils. The phonetic method of teaching students to learn letters and sound them out appears to achieve better reading results. The problem of words that cannot be sounded out ­ such as rough, laugh or through ­ is not solved by phonetics. These words must simply be memorized. However, for children with dyslexia the problem can be compounded by the failure of parents or teachers to recognize the condition. This can easily lead to emotional problems for dyslexic children, who cannot understand their failure to keep up with their classmates.
In Dyslexia, letters and figures often appear __________